58721940 has 72 divisors (see below), whose sum is σ = 179481120. Its totient is φ = 15539904.

The previous prime is 58721939. The next prime is 58721953. The reversal of 58721940 is 4912785.

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 = 58721895 and 58721904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23847 + ... + 26193.

Almost surely, 2^58721940 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 58721940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89740560).

58721940 is an abundant number, since it is smaller than the sum of its proper divisors (120759180).

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

58721940 is a wasteful number, since it uses less digits than its factorization.

58721940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2496 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 58721940 is about 7663.0242071913. The cubic root of 58721940 is about 388.6871039639.

The spelling of 58721940 in words is "fifty-eight million, seven hundred twenty-one thousand, nine hundred forty".