623485240 has 32 divisors (see below), whose sum is σ = 1603248480. Its totient is φ = 213766272.

The previous prime is 623485223. The next prime is 623485243. The reversal of 623485240 is 42584326.

It is a junction number, because it is equal to n+sod(n) for n = 623485196 and 623485205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623485243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113087 + ... + 1113646.

It is an arithmetic number, because the mean of its divisors is an integer number (50101515).

Almost surely, 2^623485240 is an apocalyptic number.

It is an amenable number.

623485240 is an abundant number, since it is smaller than the sum of its proper divisors (979763240).

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

623485240 is a wasteful number, since it uses less digits than its factorization.

623485240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226751 (or 2226747 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The square root of 623485240 is about 24969.6864217395. The cubic root of 623485240 is about 854.2966937278.

The spelling of 623485240 in words is "six hundred twenty-three million, four hundred eighty-five thousand, two hundred forty".