20097960 has 32 divisors (see below), whose sum is σ = 60294240. Its totient is φ = 5359424.

The previous prime is 20097947. The next prime is 20097977. The reversal of 20097960 is 6979002.

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, 83622 + ... + 83861.

It is an arithmetic number, because the mean of its divisors is an integer number (1884195).

Almost surely, 2^20097960 is an apocalyptic number.

20097960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20097960 is an abundant number, since it is smaller than the sum of its proper divisors (40196280).

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

20097960 is a wasteful number, since it uses less digits than its factorization.

20097960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167497 (or 167493 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 20097960 is about 4483.0748376533. The cubic root of 20097960 is about 271.8842139829.

The spelling of 20097960 in words is "twenty million, ninety-seven thousand, nine hundred sixty".