Search a number
-
+
190140858 = 2341173709
BaseRepresentation
bin10110101010101…
…01000110111010
3111020210011020000
423111111012322
5342134001413
630511213430
74466112345
oct1325250672
9436704200
10190140858
1198369706
1253817276
13305148ab
141b37745c
1511a5d073
hexb5551ba

190140858 has 20 divisors (see below), whose sum is σ = 426056730. Its totient is φ = 63380232.

The previous prime is 190140851. The next prime is 190140859. The reversal of 190140858 is 858041091.

It can be written as a sum of positive squares in only one way, i.e., 187881849 + 2259009 = 13707^2 + 1503^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190140851) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 586693 + ... + 587016.

Almost surely, 2190140858 is an apocalyptic number.

190140858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190140858 is an abundant number, since it is smaller than the sum of its proper divisors (235915872).

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

190140858 is a wasteful number, since it uses less digits than its factorization.

190140858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173723 (or 1173714 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 190140858 is about 13789.1572621390. The cubic root of 190140858 is about 575.0317391428.

The spelling of 190140858 in words is "one hundred ninety million, one hundred forty thousand, eight hundred fifty-eight".

Divisors: 1 2 3 6 9 18 27 54 81 162 1173709 2347418 3521127 7042254 10563381 21126762 31690143 63380286 95070429 190140858