52420380 has 48 divisors (see below), whose sum is σ = 151517184. Its totient is φ = 13527360.

The previous prime is 52420363. The next prime is 52420391. The reversal of 52420380 is 8302425.

It is a self number, because there is not a number n which added to its sum of digits gives 52420380.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12232 + ... + 15951.

It is an arithmetic number, because the mean of its divisors is an integer number (3156608).

Almost surely, 2^52420380 is an apocalyptic number.

It is an amenable number.

52420380 is an abundant number, since it is smaller than the sum of its proper divisors (99096804).

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

52420380 is a wasteful number, since it uses less digits than its factorization.

52420380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28226 (or 28224 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 52420380 is about 7240.1919864048. The cubic root of 52420380 is about 374.2542334246.

The spelling of 52420380 in words is "fifty-two million, four hundred twenty thousand, three hundred eighty".