53733720 has 64 divisors (see below), whose sum is σ = 162090720. Its totient is φ = 14249984.

The previous prime is 53733707. The next prime is 53733769. The reversal of 53733720 is 2733735.

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

It is a congruent number.

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, 22504 + ... + 24776.

Almost surely, 2^53733720 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 53733720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81045360).

53733720 is an abundant number, since it is smaller than the sum of its proper divisors (108357000).

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

53733720 is a wasteful number, since it uses less digits than its factorization.

53733720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 30.

The square root of 53733720 is about 7330.3287784382. The cubic root of 53733720 is about 377.3540098908.

The spelling of 53733720 in words is "fifty-three million, seven hundred thirty-three thousand, seven hundred twenty".