652045440 has 128 divisors (see below), whose sum is σ = 2088878400. Its totient is φ = 173002752.

The previous prime is 652045411. The next prime is 652045447. The reversal of 652045440 is 44540256.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 652045398 and 652045407.

It is not an unprimeable number, because it can be changed into a prime (652045447) 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, 438939 + ... + 440421.

Almost surely, 2^652045440 is an apocalyptic number.

652045440 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 652045440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044439200).

652045440 is an abundant number, since it is smaller than the sum of its proper divisors (1436832960).

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

652045440 is a wasteful number, since it uses less digits than its factorization.

652045440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1734 (or 1722 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 652045440 is about 25535.1804379762. The cubic root of 652045440 is about 867.1467898525.

Adding to 652045440 its reverse (44540256), we get a palindrome (696585696).

The spelling of 652045440 in words is "six hundred fifty-two million, forty-five thousand, four hundred forty".