20372464 has 40 divisors (see below), whose sum is σ = 45889920. Its totient is φ = 8580288.

The previous prime is 20372461. The next prime is 20372483. The reversal of 20372464 is 46427302.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372461) 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, 5067 + ... + 8149.

It is an arithmetic number, because the mean of its divisors is an integer number (1147248).

Almost surely, 2^20372464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20372464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22944960).

20372464 is an abundant number, since it is smaller than the sum of its proper divisors (25517456).

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

20372464 is a wasteful number, since it uses less digits than its factorization.

20372464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157 (or 3151 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 20372464 is about 4513.5866004764. The cubic root of 20372464 is about 273.1164463631.

Adding to 20372464 its reverse (46427302), we get a palindrome (66799766).

The spelling of 20372464 in words is "twenty million, three hundred seventy-two thousand, four hundred sixty-four".