75972740 has 12 divisors (see below), whose sum is σ = 159542796. Its totient is φ = 30389088.

The previous prime is 75972739. The next prime is 75972817. The reversal of 75972740 is 4727957.

It can be written as a sum of positive squares in 2 ways, for example, as 60590656 + 15382084 = 7784^2 + 3922^2 .

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, 1899299 + ... + 1899338.

It is an arithmetic number, because the mean of its divisors is an integer number (13295233).

Almost surely, 2^75972740 is an apocalyptic number.

It is an amenable number.

75972740 is an abundant number, since it is smaller than the sum of its proper divisors (83570056).

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

75972740 is a wasteful number, since it uses less digits than its factorization.

75972740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3798646 (or 3798644 counting only the distinct ones).

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 75972740 is about 8716.2342786320. The cubic root of 75972740 is about 423.5317082679.

The spelling of 75972740 in words is "seventy-five million, nine hundred seventy-two thousand, seven hundred forty".