20229132 has 48 divisors (see below), whose sum is σ = 58851072. Its totient is φ = 5254080.

The previous prime is 20229119. The next prime is 20229161. The reversal of 20229132 is 23192202.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20229099 and 20229108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10023 + ... + 11870.

It is an arithmetic number, because the mean of its divisors is an integer number (1226064).

Almost surely, 2^20229132 is an apocalyptic number.

20229132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20229132 is an abundant number, since it is smaller than the sum of its proper divisors (38621940).

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

20229132 is a wasteful number, since it uses less digits than its factorization.

20229132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21918 (or 21916 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20229132 is about 4497.6807356681. The cubic root of 20229132 is about 272.4744279233.

The spelling of 20229132 in words is "twenty million, two hundred twenty-nine thousand, one hundred thirty-two".