20464450 has 12 divisors (see below), whose sum is σ = 38063970. Its totient is φ = 8185760.

The previous prime is 20464439. The next prime is 20464471. The reversal of 20464450 is 5446402.

It can be written as a sum of positive squares in 3 ways, for example, as 16216729 + 4247721 = 4027^2 + 2061^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 204595 + ... + 204694.

Almost surely, 2^20464450 is an apocalyptic number.

20464450 is a deficient number, since it is larger than the sum of its proper divisors (17599520).

20464450 is a wasteful number, since it uses less digits than its factorization.

20464450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409301 (or 409296 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 20464450 is about 4523.7650248438. The cubic root of 20464450 is about 273.5268888157.

The spelling of 20464450 in words is "twenty million, four hundred sixty-four thousand, four hundred fifty".