52769640 has 128 divisors (see below), whose sum is σ = 197406720. Its totient is φ = 10963200.

The previous prime is 52769627. The next prime is 52769641. The reversal of 52769640 is 4696725.

52769640 = T₂₅₃ + T₂₅₄ + ... + T₆₉₂.

It is not an unprimeable number, because it can be changed into a prime (52769641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6385 + ... + 12095.

It is an arithmetic number, because the mean of its divisors is an integer number (1542240).

Almost surely, 2^52769640 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 52769640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98703360).

52769640 is an abundant number, since it is smaller than the sum of its proper divisors (144637080).

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

52769640 is a wasteful number, since it uses less digits than its factorization.

52769640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5743 (or 5739 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 52769640 is about 7264.2714706982. The cubic root of 52769640 is about 375.0835724848.

The spelling of 52769640 in words is "fifty-two million, seven hundred sixty-nine thousand, six hundred forty".