72751040 has 56 divisors (see below), whose sum is σ = 176125632. Its totient is φ = 28615680.

The previous prime is 72751037. The next prime is 72751103. The reversal of 72751040 is 4015727.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17657 + ... + 21383.

Almost surely, 2^72751040 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 72751040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88062816).

72751040 is an abundant number, since it is smaller than the sum of its proper divisors (103374592).

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

72751040 is a wasteful number, since it uses less digits than its factorization.

72751040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 26.

The square root of 72751040 is about 8529.4220202778. The cubic root of 72751040 is about 417.4582697005.

Adding to 72751040 its reverse (4015727), we get a palindrome (76766767).

The spelling of 72751040 in words is "seventy-two million, seven hundred fifty-one thousand, forty".