109657816 has 32 divisors (see below), whose sum is σ = 223902000. Its totient is φ = 50150016.

The previous prime is 109657811. The next prime is 109657829. The reversal of 109657816 is 618756901.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109657811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8031 + ... + 16846.

Almost surely, 2^109657816 is an apocalyptic number.

It is an amenable number.

109657816 is an abundant number, since it is smaller than the sum of its proper divisors (114244184).

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

109657816 is a wasteful number, since it uses less digits than its factorization.

109657816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24931 (or 24927 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 109657816 is about 10471.7627933410. The cubic root of 109657816 is about 478.6446371494.

It can be divided in two parts, 10965 and 7816, that added together give a palindrome (18781).

The spelling of 109657816 in words is "one hundred nine million, six hundred fifty-seven thousand, eight hundred sixteen".