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190216290 = 235111135101
BaseRepresentation
bin10110101011001…
…11100001100010
3111020220222200210
423111213201202
5342143410130
630512554550
74466545305
oct1325474142
9436828623
10190216290
1198410350
1253852a56
1330540024
141b396b3c
1511a755b0
hexb567862

190216290 has 64 divisors (see below), whose sum is σ = 502526592. Its totient is φ = 45696000.

The previous prime is 190216267. The next prime is 190216303. The reversal of 190216290 is 92612091.

It is a happy number.

190216290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34740 + ... + 39840.

It is an arithmetic number, because the mean of its divisors is an integer number (7851978).

Almost surely, 2190216290 is an apocalyptic number.

190216290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 190216290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (251263296).

190216290 is an abundant number, since it is smaller than the sum of its proper divisors (312310302).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

190216290 is a wasteful number, since it uses less digits than its factorization.

190216290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 190216290 is about 13791.8921834533. The cubic root of 190216290 is about 575.1077705999.

The spelling of 190216290 in words is "one hundred ninety million, two hundred sixteen thousand, two hundred ninety".

Divisors: 1 2 3 5 6 10 11 15 22 30 33 55 66 110 113 165 226 330 339 565 678 1130 1243 1695 2486 3390 3729 5101 6215 7458 10202 12430 15303 18645 25505 30606 37290 51010 56111 76515 112222 153030 168333 280555 336666 561110 576413 841665 1152826 1683330 1729239 2882065 3458478 5764130 6340543 8646195 12681086 17292390 19021629 31702715 38043258 63405430 95108145 190216290