109912428 has 36 divisors (see below), whose sum is σ = 281987160. Its totient is φ = 36089856.

The previous prime is 109912427. The next prime is 109912441. The reversal of 109912428 is 824219901.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 109912392 and 109912401.

It is not an unprimeable number, because it can be changed into a prime (109912427) 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, 20373 + ... + 25196.

Almost surely, 2^109912428 is an apocalyptic number.

109912428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

109912428 is an abundant number, since it is smaller than the sum of its proper divisors (172074732).

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

109912428 is a wasteful number, since it uses less digits than its factorization.

109912428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45646 (or 45641 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 109912428 is about 10483.9128191720. The cubic root of 109912428 is about 479.0148021861.

The spelling of 109912428 in words is "one hundred nine million, nine hundred twelve thousand, four hundred twenty-eight".