60721388 has 36 divisors (see below), whose sum is σ = 133125552. Its totient is φ = 24020640.

The previous prime is 60721387. The next prime is 60721391. The reversal of 60721388 is 88312706.

It is not an unprimeable number, because it can be changed into a prime (60721387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9368 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (3697932).

Almost surely, 2^60721388 is an apocalyptic number.

It is an amenable number.

60721388 is an abundant number, since it is smaller than the sum of its proper divisors (72404164).

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

60721388 is a wasteful number, since it uses less digits than its factorization.

60721388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23862 (or 23853 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 60721388 is about 7792.3929572372. The cubic root of 60721388 is about 393.0494836762.

The spelling of 60721388 in words is "sixty million, seven hundred twenty-one thousand, three hundred eighty-eight".