52340040 has 64 divisors (see below), whose sum is σ = 174470400. Its totient is φ = 13957056.

The previous prime is 52340017. The next prime is 52340047. The reversal of 52340040 is 4004325.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 52339995 and 52340022.

It is not an unprimeable number, because it can be changed into a prime (52340047) 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, 23152 + ... + 25311.

It is an arithmetic number, because the mean of its divisors is an integer number (2726100).

Almost surely, 2^52340040 is an apocalyptic number.

It is an amenable number.

52340040 is an abundant number, since it is smaller than the sum of its proper divisors (122130360).

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

52340040 is a wasteful number, since it uses less digits than its factorization.

52340040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48483 (or 48473 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 52340040 is about 7234.6416635518. The cubic root of 52340040 is about 374.0629404019.

Adding to 52340040 its reverse (4004325), we get a palindrome (56344365).

The spelling of 52340040 in words is "fifty-two million, three hundred forty thousand, forty".