20164632 has 32 divisors (see below), whose sum is σ = 52039680. Its totient is φ = 6504480.

The previous prime is 20164631. The next prime is 20164649. The reversal of 20164632 is 23646102.

It is a super-2 number, since 2×20164632² = 813224767390848, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164631) 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, 12808 + ... + 14295.

It is an arithmetic number, because the mean of its divisors is an integer number (1626240).

Almost surely, 2^20164632 is an apocalyptic number.

It is an amenable number.

20164632 is an abundant number, since it is smaller than the sum of its proper divisors (31875048).

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

20164632 is a wasteful number, since it uses less digits than its factorization.

20164632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27143 (or 27139 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 20164632 is about 4490.5046487004. The cubic root of 20164632 is about 272.1845273241.

The spelling of 20164632 in words is "twenty million, one hundred sixty-four thousand, six hundred thirty-two".