15920398 has 32 divisors (see below), whose sum is σ = 27518400. Its totient is φ = 6842880.

The previous prime is 15920389. The next prime is 15920413. The reversal of 15920398 is 89302951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79903 + ... + 80101.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^15920398 is an apocalyptic number.

15920398 is a deficient number, since it is larger than the sum of its proper divisors (11598002).

15920398 is a wasteful number, since it uses less digits than its factorization.

15920398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 15920398 is about 3990.0373431836. The cubic root of 15920398 is about 251.5656307340.

The spelling of 15920398 in words is "fifteen million, nine hundred twenty thousand, three hundred ninety-eight".