52970940 has 144 divisors (see below), whose sum is σ = 181149696. Its totient is φ = 12412800.

The previous prime is 52970891. The next prime is 52970947. The reversal of 52970940 is 4907925.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52970895 and 52970904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52970947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60949 + ... + 61811.

It is an arithmetic number, because the mean of its divisors is an integer number (1257984).

Almost surely, 2^52970940 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 52970940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90574848).

52970940 is an abundant number, since it is smaller than the sum of its proper divisors (128178756).

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

52970940 is a wasteful number, since it uses less digits than its factorization.

52970940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 52970940 is about 7278.1137666294. The cubic root of 52970940 is about 375.5599102520.

The spelling of 52970940 in words is "fifty-two million, nine hundred seventy thousand, nine hundred forty".