20796457 has 8 divisors (see below), whose sum is σ = 24021792. Its totient is φ = 17793600.

The previous prime is 20796449. The next prime is 20796467. The reversal of 20796457 is 75469702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20796457 - 2³ = 20796449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20796467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55419 + ... + 55792.

It is an arithmetic number, because the mean of its divisors is an integer number (3002724).

Almost surely, 2^20796457 is an apocalyptic number.

It is an amenable number.

20796457 is a deficient number, since it is larger than the sum of its proper divisors (3225335).

20796457 is a wasteful number, since it uses less digits than its factorization.

20796457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111239.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 20796457 is about 4560.3132567840. The cubic root of 20796457 is about 274.9981575634.

The spelling of 20796457 in words is "twenty million, seven hundred ninety-six thousand, four hundred fifty-seven".