20858496 has 32 divisors (see below), whose sum is σ = 55406400. Its totient is φ = 6952704.

The previous prime is 20858489. The next prime is 20858503. The reversal of 20858496 is 69485802.

It is an interprime number because it is at equal distance from previous prime (20858489) and next prime (20858503).

It is a tau number, because it is divible by the number of its divisors (32).

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, 26776 + ... + 27543.

It is an arithmetic number, because the mean of its divisors is an integer number (1731450).

Almost surely, 2^20858496 is an apocalyptic number.

It is an amenable number.

20858496 is an abundant number, since it is smaller than the sum of its proper divisors (34547904).

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

20858496 is an equidigital number, since it uses as much as digits as its factorization.

20858496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54336 (or 54324 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 20858496 is about 4567.1102460965. The cubic root of 20858496 is about 275.2713398969.

The spelling of 20858496 in words is "twenty million, eight hundred fifty-eight thousand, four hundred ninety-six".