623438032 has 40 divisors (see below), whose sum is σ = 1453131200. Its totient is φ = 253124352.

The previous prime is 623438017. The next prime is 623438041. The reversal of 623438032 is 230834326.

It is a junction number, because it is equal to n+sod(n) for n = 623437985 and 623438003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144357 + ... + 148612.

It is an arithmetic number, because the mean of its divisors is an integer number (36328280).

Almost surely, 2^623438032 is an apocalyptic number.

It is an amenable number.

623438032 is an abundant number, since it is smaller than the sum of its proper divisors (829693168).

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

623438032 is a wasteful number, since it uses less digits than its factorization.

623438032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293003 (or 292997 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 623438032 is about 24968.7410976204. The cubic root of 623438032 is about 854.2751317866.

The spelling of 623438032 in words is "six hundred twenty-three million, four hundred thirty-eight thousand, thirty-two".