652123992 has 64 divisors (see below), whose sum is σ = 1767034080. Its totient is φ = 199360512.

The previous prime is 652123981. The next prime is 652123999. The reversal of 652123992 is 299321256.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 652123992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652123999) 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, 42328 + ... + 55640.

Almost surely, 2^652123992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 652123992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (883517040).

652123992 is an abundant number, since it is smaller than the sum of its proper divisors (1114910088).

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

652123992 is a wasteful number, since it uses less digits than its factorization.

652123992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13492 (or 13488 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 652123992 is about 25536.7185049293. The cubic root of 652123992 is about 867.1816102170.

The spelling of 652123992 in words is "six hundred fifty-two million, one hundred twenty-three thousand, nine hundred ninety-two".