20919932 has 18 divisors (see below), whose sum is σ = 40241544. Its totient is φ = 9508840.

The previous prime is 20919919. The next prime is 20919953. The reversal of 20919932 is 23991902.

It is a junction number, because it is equal to n+sod(n) for n = 20919892 and 20919901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21128 + ... + 22095.

Almost surely, 2^20919932 is an apocalyptic number.

20919932 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20919932 is a deficient number, since it is larger than the sum of its proper divisors (19321612).

20919932 is a wasteful number, since it uses less digits than its factorization.

20919932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43249 (or 43236 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 20919932 is about 4573.8312168247. The cubic root of 20919932 is about 275.5413336929.

The spelling of 20919932 in words is "twenty million, nine hundred nineteen thousand, nine hundred thirty-two".