20875632 has 20 divisors (see below), whose sum is σ = 53928840. Its totient is φ = 6958528.

The previous prime is 20875627. The next prime is 20875637. The reversal of 20875632 is 23657802.

It is an interprime number because it is at equal distance from previous prime (20875627) and next prime (20875637).

It is a super-2 number, since 2×20875632² = 871584022798848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20875593 and 20875602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20875637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217407 + ... + 217502.

It is an arithmetic number, because the mean of its divisors is an integer number (2696442).

Almost surely, 2^20875632 is an apocalyptic number.

It is an amenable number.

20875632 is an abundant number, since it is smaller than the sum of its proper divisors (33053208).

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

20875632 is a wasteful number, since it uses less digits than its factorization.

20875632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434920 (or 434914 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 20875632 is about 4568.9858831036. The cubic root of 20875632 is about 275.3467010116.

The spelling of 20875632 in words is "twenty million, eight hundred seventy-five thousand, six hundred thirty-two".