461984540 has 24 divisors (see below), whose sum is σ = 973758912. Its totient is φ = 184109760.

The previous prime is 461984539. The next prime is 461984609. The reversal of 461984540 is 45489164.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37199 + ... + 48038.

It is an arithmetic number, because the mean of its divisors is an integer number (40573288).

Almost surely, 2^461984540 is an apocalyptic number.

It is an amenable number.

461984540 is an abundant number, since it is smaller than the sum of its proper divisors (511774372).

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

461984540 is a wasteful number, since it uses less digits than its factorization.

461984540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85517 (or 85515 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 461984540 is about 21493.8256250487. The cubic root of 461984540 is about 773.0527821184.

The spelling of 461984540 in words is "four hundred sixty-one million, nine hundred eighty-four thousand, five hundred forty".