52406340 has 48 divisors (see below), whose sum is σ = 167701632. Its totient is φ = 11978496.

The previous prime is 52406339. The next prime is 52406357. The reversal of 52406340 is 4360425.

It is a self number, because there is not a number n which added to its sum of digits gives 52406340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61969 + ... + 62808.

It is an arithmetic number, because the mean of its divisors is an integer number (3493784).

Almost surely, 2^52406340 is an apocalyptic number.

It is an amenable number.

52406340 is an abundant number, since it is smaller than the sum of its proper divisors (115295292).

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

52406340 is a wasteful number, since it uses less digits than its factorization.

52406340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124796 (or 124794 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 52406340 is about 7239.2223339251. Note that the first 3 decimals coincide. The cubic root of 52406340 is about 374.2208176766.

Adding to 52406340 its reverse (4360425), we get a palindrome (56766765).

The spelling of 52406340 in words is "fifty-two million, four hundred six thousand, three hundred forty".