20332464 has 40 divisors (see below), whose sum is σ = 53752512. Its totient is φ = 6619200.

The previous prime is 20332439. The next prime is 20332469. The reversal of 20332464 is 46423302.

It is a happy number.

It is a super-2 number, since 2×20332464² = 826818184622592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (20332469) 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, 2862 + ... + 6989.

Almost surely, 2^20332464 is an apocalyptic number.

20332464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20332464 is an abundant number, since it is smaller than the sum of its proper divisors (33420048).

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

20332464 is a wasteful number, since it uses less digits than its factorization.

20332464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9905 (or 9899 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 20332464 is about 4509.1533573388. The cubic root of 20332464 is about 272.9375804911.

Adding to 20332464 its reverse (46423302), we get a palindrome (66755766).

The spelling of 20332464 in words is "twenty million, three hundred thirty-two thousand, four hundred sixty-four".