75249790 has 96 divisors (see below), whose sum is σ = 179656704. Its totient is φ = 22397760.

The previous prime is 75249781. The next prime is 75249817. The reversal of 75249790 is 9794257.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123667 + ... + 124273.

It is an arithmetic number, because the mean of its divisors is an integer number (1871424).

Almost surely, 2^75249790 is an apocalyptic number.

75249790 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

75249790 is an abundant number, since it is smaller than the sum of its proper divisors (104406914).

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

75249790 is a wasteful number, since it uses less digits than its factorization.

75249790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 75249790 is about 8674.6636822415. The cubic root of 75249790 is about 422.1839939484.

The spelling of 75249790 in words is "seventy-five million, two hundred forty-nine thousand, seven hundred ninety".