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190612692 = 22325294797
BaseRepresentation
bin10110101110010…
…00010011010100
3111021200010110100
423113020103110
5342244101232
630525254100
74503116064
oct1327102324
9437603410
10190612692
1198661156
1253a04330
133064b59a
141b45b3a4
1511b02c7c
hexb5c84d4

190612692 has 18 divisors (see below), whose sum is σ = 481826618. Its totient is φ = 63537552.

The previous prime is 190612651. The next prime is 190612703. The reversal of 190612692 is 296216091.

It can be written as a sum of positive squares in only one way, i.e., 190605636 + 7056 = 13806^2 + 84^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5294797 = 190612692 / (1 + 9 + 0 + 6 + 1 + 2 + 6 + 9 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2647363 + ... + 2647434.

Almost surely, 2190612692 is an apocalyptic number.

190612692 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

190612692 is an abundant number, since it is smaller than the sum of its proper divisors (291213926).

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

190612692 is a wasteful number, since it uses less digits than its factorization.

190612692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5294807 (or 5294802 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 190612692 is about 13806.2555387042. The cubic root of 190612692 is about 575.5069927892.

The spelling of 190612692 in words is "one hundred ninety million, six hundred twelve thousand, six hundred ninety-two".

Divisors: 1 2 3 4 6 9 12 18 36 5294797 10589594 15884391 21179188 31768782 47653173 63537564 95306346 190612692