652231944 has 144 divisors (see below), whose sum is σ = 2213085420. Its totient is φ = 172005120.

The previous prime is 652231933. The next prime is 652231963. The reversal of 652231944 is 449132256.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 645668100 + 6563844 = 25410^2 + 2562^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 652231899 and 652231908.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 38754 + ... + 52974.

Almost surely, 2^652231944 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 652231944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1106542710).

652231944 is an abundant number, since it is smaller than the sum of its proper divisors (1560853476).

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

652231944 is a wasteful number, since it uses less digits than its factorization.

652231944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14260 (or 14246 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 652231944 is about 25538.8320797957. The cubic root of 652231944 is about 867.2294583896.

The spelling of 652231944 in words is "six hundred fifty-two million, two hundred thirty-one thousand, nine hundred forty-four".