652431780 has 768 divisors, whose sum is σ = 2926264320. Its totient is φ = 116121600.

The previous prime is 652431779. The next prime is 652431799. The reversal of 652431780 is 87134256.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 9189145 + ... + 9189215.

It is an arithmetic number, because the mean of its divisors is an integer number (3810240).

Almost surely, 2^652431780 is an apocalyptic number.

652431780 is a gapful number since it is divisible by the number (60) 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 652431780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1463132160).

652431780 is an abundant number, since it is smaller than the sum of its proper divisors (2273832540).

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

652431780 is a wasteful number, since it uses less digits than its factorization.

652431780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 652431780 is about 25542.7441752056. The cubic root of 652431780 is about 867.3180188939.

The spelling of 652431780 in words is "six hundred fifty-two million, four hundred thirty-one thousand, seven hundred eighty".