20466464 has 12 divisors (see below), whose sum is σ = 40293414. Its totient is φ = 10233216.

The previous prime is 20466463. The next prime is 20466469. The reversal of 20466464 is 46466402.

It can be written as a sum of positive squares in only one way, i.e., 20322064 + 144400 = 4508^2 + 380^2 .

It is a super-2 number, since 2×20466464² = 837752297326592, which contains 22 as substring.

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: 639577 = 20466464 / (2 + 0 + 4 + 6 + 6 + 4 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 20466464.

It is not an unprimeable number, because it can be changed into a prime (20466461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319757 + ... + 319820.

Almost surely, 2^20466464 is an apocalyptic number.

It is an amenable number.

20466464 is a deficient number, since it is larger than the sum of its proper divisors (19826950).

20466464 is an equidigital number, since it uses as much as digits as its factorization.

20466464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639587 (or 639579 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 20466464 is about 4523.9876215569. The cubic root of 20466464 is about 273.5358615316.

The spelling of 20466464 in words is "twenty million, four hundred sixty-six thousand, four hundred sixty-four".