452812440 has 64 divisors (see below), whose sum is σ = 1377596160. Its totient is φ = 119047040.

The previous prime is 452812421. The next prime is 452812441. The reversal of 452812440 is 44218254.

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 = 452812398 and 452812407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (452812441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18054 + ... + 35093.

It is an arithmetic number, because the mean of its divisors is an integer number (21524940).

Almost surely, 2^452812440 is an apocalyptic number.

452812440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

452812440 is an abundant number, since it is smaller than the sum of its proper divisors (924783720).

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

452812440 is a wasteful number, since it uses less digits than its factorization.

452812440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53232 (or 53228 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 452812440 is about 21279.3900288519. The cubic root of 452812440 is about 767.9025619656.

The spelling of 452812440 in words is "four hundred fifty-two million, eight hundred twelve thousand, four hundred forty".