10809156 has 12 divisors (see below), whose sum is σ = 25221392. Its totient is φ = 3603048.

The previous prime is 10809151. The next prime is 10809179. The reversal of 10809156 is 65190801.

It is a happy number.

10809156 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10809151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450370 + ... + 450393.

Almost surely, 2^10809156 is an apocalyptic number.

It is an amenable number.

10809156 is an abundant number, since it is smaller than the sum of its proper divisors (14412236).

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

10809156 is a wasteful number, since it uses less digits than its factorization.

10809156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900770 (or 900768 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 10809156 is about 3287.7280909467. The cubic root of 10809156 is about 221.1043370754.

Adding to 10809156 its reverse (65190801), we get a palindrome (75999957).

The spelling of 10809156 in words is "ten million, eight hundred nine thousand, one hundred fifty-six".