423515400 has 384 divisors, whose sum is σ = 1671321600. Its totient is φ = 86169600.

The previous prime is 423515387. The next prime is 423515419. The reversal of 423515400 is 4515324.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4111749 + ... + 4111851.

It is an arithmetic number, because the mean of its divisors is an integer number (4352400).

Almost surely, 2^423515400 is an apocalyptic number.

423515400 is a gapful number since it is divisible by the number (40) 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 423515400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (835660800).

423515400 is an abundant number, since it is smaller than the sum of its proper divisors (1247806200).

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

423515400 is a wasteful number, since it uses less digits than its factorization.

423515400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 423515400 is about 20579.4897895939. The cubic root of 423515400 is about 750.9708316612.

The spelling of 423515400 in words is "four hundred twenty-three million, five hundred fifteen thousand, four hundred".