52347720 has 32 divisors (see below), whose sum is σ = 157043520. Its totient is φ = 13959360.

The previous prime is 52347719. The next prime is 52347721. The reversal of 52347720 is 2774325.

It is an interprime number because it is at equal distance from previous prime (52347719) and next prime (52347721).

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

It is not an unprimeable number, because it can be changed into a prime (52347721) 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, 217996 + ... + 218235.

It is an arithmetic number, because the mean of its divisors is an integer number (4907610).

Almost surely, 2^52347720 is an apocalyptic number.

It is an amenable number.

52347720 is an abundant number, since it is smaller than the sum of its proper divisors (104695800).

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

52347720 is a wasteful number, since it uses less digits than its factorization.

52347720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436245 (or 436241 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 52347720 is about 7235.1724236538. The cubic root of 52347720 is about 374.0812352731.

The spelling of 52347720 in words is "fifty-two million, three hundred forty-seven thousand, seven hundred twenty".