75756440 has 16 divisors (see below), whose sum is σ = 170452080. Its totient is φ = 30302560.

The previous prime is 75756391. The next prime is 75756463. The reversal of 75756440 is 4465757.

It is a junction number, because it is equal to n+sod(n) for n = 75756394 and 75756403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946916 + ... + 946995.

It is an arithmetic number, because the mean of its divisors is an integer number (10653255).

Almost surely, 2^75756440 is an apocalyptic number.

It is an amenable number.

75756440 is an abundant number, since it is smaller than the sum of its proper divisors (94695640).

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

75756440 is a wasteful number, since it uses less digits than its factorization.

75756440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893922 (or 1893918 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 75756440 is about 8703.8175532349. The cubic root of 75756440 is about 423.1293841960.

The spelling of 75756440 in words is "seventy-five million, seven hundred fifty-six thousand, four hundred forty".