20464032 has 48 divisors (see below), whose sum is σ = 54643680. Its totient is φ = 6703872.

The previous prime is 20464027. The next prime is 20464057. The reversal of 20464032 is 23046402.

20464032 = T₂₁₂₈ + T₂₁₂₉ + ... + T₂₁₃₆.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3858 + ... + 7470.

It is an arithmetic number, because the mean of its divisors is an integer number (1138410).

Almost surely, 2^20464032 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 20464032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27321840).

20464032 is an abundant number, since it is smaller than the sum of its proper divisors (34179648).

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

20464032 is a wasteful number, since it uses less digits than its factorization.

20464032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3685 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20464032 is about 4523.7188241534. The cubic root of 20464032 is about 273.5250264802.

The spelling of 20464032 in words is "twenty million, four hundred sixty-four thousand, thirty-two".