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16000290 = 23251391279
BaseRepresentation
bin111101000010…
…010100100010
31010002220021100
4331002110202
513044002130
61330535230
7253000035
oct75022442
933086240
1016000290
119039289
125437516
133412a37
1421a701c
151610c60
hexf42522

16000290 has 48 divisors (see below), whose sum is σ = 41932800. Its totient is φ = 4232736.

The previous prime is 16000289. The next prime is 16000307. The reversal of 16000290 is 9200061.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11871 + ... + 13149.

It is an arithmetic number, because the mean of its divisors is an integer number (873600).

Almost surely, 216000290 is an apocalyptic number.

16000290 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 16000290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20966400).

16000290 is an abundant number, since it is smaller than the sum of its proper divisors (25932510).

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

16000290 is a wasteful number, since it uses less digits than its factorization.

16000290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431 (or 1428 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 16000290 is about 4000.0362498357. The cubic root of 16000290 is about 251.9857323744.

It can be divided in two parts, 16000 and 290, that added together give a triangular number (16290 = T180).

The spelling of 16000290 in words is "sixteen million, two hundred ninety", and thus it is an aban number.

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 139 278 417 695 834 1251 1279 1390 2085 2502 2558 3837 4170 6255 6395 7674 11511 12510 12790 19185 23022 38370 57555 115110 177781 355562 533343 888905 1066686 1600029 1777810 2666715 3200058 5333430 8000145 16000290