2451720732 has 48 divisors (see below), whose sum is σ = 5802384000. Its totient is φ = 805612608.

The previous prime is 2451720731. The next prime is 2451720757. The reversal of 2451720732 is 2370271542.

It is a junction number, because it is equal to n+sod(n) for n = 2451720693 and 2451720702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2451720731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494538 + ... + 499470.

It is an arithmetic number, because the mean of its divisors is an integer number (120883000).

Almost surely, 2^2451720732 is an apocalyptic number.

It is an amenable number.

2451720732 is an abundant number, since it is smaller than the sum of its proper divisors (3350663268).

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

2451720732 is a wasteful number, since it uses less digits than its factorization.

2451720732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5522 (or 5520 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 2451720732 is about 49514.8536501927. The cubic root of 2451720732 is about 1348.4152839715.

The spelling of 2451720732 in words is "two billion, four hundred fifty-one million, seven hundred twenty thousand, seven hundred thirty-two".