124740728 has 16 divisors (see below), whose sum is σ = 267301680. Its totient is φ = 53460288.

The previous prime is 124740697. The next prime is 124740743. The reversal of 124740728 is 827047421.

It is a happy number.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113701 + ... + 1113812.

It is an arithmetic number, because the mean of its divisors is an integer number (16706355).

Almost surely, 2^124740728 is an apocalyptic number.

It is an amenable number.

124740728 is an abundant number, since it is smaller than the sum of its proper divisors (142560952).

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

124740728 is a wasteful number, since it uses less digits than its factorization.

124740728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227526 (or 2227522 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 124740728 is about 11168.7388724063. The cubic root of 124740728 is about 499.6540647128.

The spelling of 124740728 in words is "one hundred twenty-four million, seven hundred forty thousand, seven hundred twenty-eight".