20826464 has 12 divisors (see below), whose sum is σ = 41002164. Its totient is φ = 10413216.

The previous prime is 20826461. The next prime is 20826473. The reversal of 20826464 is 46462802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 650827 = 20826464 / (2 + 0 + 8 + 2 + 6 + 4 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 20826464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20826461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325382 + ... + 325445.

It is an arithmetic number, because the mean of its divisors is an integer number (3416847).

Almost surely, 2^20826464 is an apocalyptic number.

It is an amenable number.

20826464 is a deficient number, since it is larger than the sum of its proper divisors (20175700).

20826464 is an equidigital number, since it uses as much as digits as its factorization.

20826464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650837 (or 650829 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 20826464 is about 4563.6020860719. The cubic root of 20826464 is about 275.1303580314.

The spelling of 20826464 in words is "twenty million, eight hundred twenty-six thousand, four hundred sixty-four".