52769440 has 48 divisors (see below), whose sum is σ = 128701440. Its totient is φ = 20424960.

The previous prime is 52769413. The next prime is 52769443. The reversal of 52769440 is 4496725.

It is a super-2 number, since 2×52769440² = 5569227595827200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 52769440.

It is not an unprimeable number, because it can be changed into a prime (52769443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360 + ... + 10279.

It is an arithmetic number, because the mean of its divisors is an integer number (2681280).

Almost surely, 2^52769440 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 52769440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64350720).

52769440 is an abundant number, since it is smaller than the sum of its proper divisors (75932000).

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

52769440 is a wasteful number, since it uses less digits than its factorization.

52769440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10685 (or 10677 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 52769440 is about 7264.2577046798. The cubic root of 52769440 is about 375.0830986213.

The spelling of 52769440 in words is "fifty-two million, seven hundred sixty-nine thousand, four hundred forty".