461556840 has 64 divisors (see below), whose sum is σ = 1416888000. Its totient is φ = 120218112.

The previous prime is 461556793. The next prime is 461556841. The reversal of 461556840 is 48655164.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (461556841) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 39565 + ... + 49884.

It is an arithmetic number, because the mean of its divisors is an integer number (22138875).

Almost surely, 2^461556840 is an apocalyptic number.

461556840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

461556840 is an abundant number, since it is smaller than the sum of its proper divisors (955331160).

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

461556840 is a wasteful number, since it uses less digits than its factorization.

461556840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89506 (or 89502 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 461556840 is about 21483.8739523392. The cubic root of 461556840 is about 772.8141473219.

The spelling of 461556840 in words is "four hundred sixty-one million, five hundred fifty-six thousand, eight hundred forty".