52087420 has 96 divisors (see below), whose sum is σ = 137894400. Its totient is φ = 16055040.

The previous prime is 52087403. The next prime is 52087423. The reversal of 52087420 is 2478025.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52087423) 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, 229347 + ... + 229573.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^52087420 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 52087420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68947200).

52087420 is an abundant number, since it is smaller than the sum of its proper divisors (85806980).

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

52087420 is a wasteful number, since it uses less digits than its factorization.

52087420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 401 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 52087420 is about 7217.1614918886. The cubic root of 52087420 is about 373.4601627616.

The spelling of 52087420 in words is "fifty-two million, eighty-seven thousand, four hundred twenty".