125440728 has 32 divisors (see below), whose sum is σ = 358402560. Its totient is φ = 35840160.

The previous prime is 125440723. The next prime is 125440729. The reversal of 125440728 is 827044521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125440723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373168 + ... + 373503.

It is an arithmetic number, because the mean of its divisors is an integer number (11200080).

Almost surely, 2^125440728 is an apocalyptic number.

It is an amenable number.

125440728 is an abundant number, since it is smaller than the sum of its proper divisors (232961832).

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

125440728 is a wasteful number, since it uses less digits than its factorization.

125440728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746687 (or 746683 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 125440728 is about 11200.0324999528. The cubic root of 125440728 is about 500.5869480477.

The spelling of 125440728 in words is "one hundred twenty-five million, four hundred forty thousand, seven hundred twenty-eight".