10815642 has 24 divisors (see below), whose sum is σ = 23546016. Its totient is φ = 3587976.

The previous prime is 10815641. The next prime is 10815671. The reversal of 10815642 is 24651801.

10815642 is a `hidden beast` number, since 1 + 0 + 8 + 15 + 642 = 666.

It is a super-2 number, since 2×10815642² = 233956223744328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10815641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2763 + ... + 5409.

It is an arithmetic number, because the mean of its divisors is an integer number (981084).

Almost surely, 2^10815642 is an apocalyptic number.

10815642 is an abundant number, since it is smaller than the sum of its proper divisors (12730374).

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

10815642 is a wasteful number, since it uses less digits than its factorization.

10815642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882 (or 2879 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 10815642 is about 3288.7143384612. The cubic root of 10815642 is about 221.1485525530.

The spelling of 10815642 in words is "ten million, eight hundred fifteen thousand, six hundred forty-two".