623033940 has 96 divisors (see below), whose sum is σ = 1843873920. Its totient is φ = 156750336.

The previous prime is 623033899. The next prime is 623033963. The reversal of 623033940 is 49330326.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 623033898 and 623033907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 314794 + ... + 316766.

It is an arithmetic number, because the mean of its divisors is an integer number (19207020).

Almost surely, 2^623033940 is an apocalyptic number.

623033940 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623033940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (921936960).

623033940 is an abundant number, since it is smaller than the sum of its proper divisors (1220839980).

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

623033940 is a wasteful number, since it uses less digits than its factorization.

623033940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2281 (or 2279 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 623033940 is about 24960.6478281314. The cubic root of 623033940 is about 854.0905208927.

The spelling of 623033940 in words is "six hundred twenty-three million, thirty-three thousand, nine hundred forty".