75317490 has 24 divisors (see below), whose sum is σ = 195825708. Its totient is φ = 20084640.

The previous prime is 75317461. The next prime is 75317491. The reversal of 75317490 is 9471357.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67716441 + 7601049 = 8229^2 + 2757^2 .

It is not an unprimeable number, because it can be changed into a prime (75317491) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 418341 + ... + 418520.

Almost surely, 2^75317490 is an apocalyptic number.

75317490 is an abundant number, since it is smaller than the sum of its proper divisors (120508218).

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

75317490 is a wasteful number, since it uses less digits than its factorization.

75317490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836874 (or 836871 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 75317490 is about 8678.5649735426. The cubic root of 75317490 is about 422.3105647966.

Adding to 75317490 its product of nonzero digits (26460), we get a triangular number (75343950 = T₁₂₂₇₅).

The spelling of 75317490 in words is "seventy-five million, three hundred seventeen thousand, four hundred ninety".