109569428 has 12 divisors (see below), whose sum is σ = 201838560. Its totient is φ = 51901272.

The previous prime is 109569419. The next prime is 109569451. The reversal of 109569428 is 824965901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720776 + ... + 720927.

It is an arithmetic number, because the mean of its divisors is an integer number (16819880).

Almost surely, 2^109569428 is an apocalyptic number.

It is an amenable number.

109569428 is a deficient number, since it is larger than the sum of its proper divisors (92269132).

109569428 is a wasteful number, since it uses less digits than its factorization.

109569428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441726 (or 1441724 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 109569428 is about 10467.5416407101. The cubic root of 109569428 is about 478.5160011930.

The spelling of 109569428 in words is "one hundred nine million, five hundred sixty-nine thousand, four hundred twenty-eight".