20919132 has 36 divisors (see below), whose sum is σ = 56947800. Its totient is φ = 6436512.

The previous prime is 20919127. The next prime is 20919137. The reversal of 20919132 is 23191902.

It is an interprime number because it is at equal distance from previous prime (20919127) and next prime (20919137).

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20919132² = 875220167266848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20919096 and 20919105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20919137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21882 + ... + 22817.

Almost surely, 2^20919132 is an apocalyptic number.

It is an amenable number.

20919132 is an abundant number, since it is smaller than the sum of its proper divisors (36028668).

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

20919132 is a wasteful number, since it uses less digits than its factorization.

20919132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44722 (or 44717 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 20919132 is about 4573.7437619526. The cubic root of 20919132 is about 275.5378213189.

The spelling of 20919132 in words is "twenty million, nine hundred nineteen thousand, one hundred thirty-two".