109621456 has 40 divisors (see below), whose sum is σ = 250571264. Its totient is φ = 45463680.

The previous prime is 109621439. The next prime is 109621471. The reversal of 109621456 is 654126901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12315 + ... + 19258.

Almost surely, 2^109621456 is an apocalyptic number.

109621456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

109621456 is an abundant number, since it is smaller than the sum of its proper divisors (140949808).

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

109621456 is a wasteful number, since it uses less digits than its factorization.

109621456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31619 (or 31613 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 109621456 is about 10470.0265520198. The cubic root of 109621456 is about 478.5917287976.

Subtracting 109621456 from its reverse (654126901), we obtain a palindrome (544505445).

The spelling of 109621456 in words is "one hundred nine million, six hundred twenty-one thousand, four hundred fifty-six".