75250290 has 64 divisors (see below), whose sum is σ = 186955776. Its totient is φ = 19372992.

The previous prime is 75250289. The next prime is 75250303. The reversal of 75250290 is 9205257.

It is a happy number.

It is a super-2 number, since 2×75250290² = 11325212290168200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116709 + ... + 117351.

It is an arithmetic number, because the mean of its divisors is an integer number (2921184).

Almost surely, 2^75250290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75250290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93477888).

75250290 is an abundant number, since it is smaller than the sum of its proper divisors (111705486).

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

75250290 is a wasteful number, since it uses less digits than its factorization.

75250290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 75250290 is about 8674.6925017547. The cubic root of 75250290 is about 422.1849290186.

The spelling of 75250290 in words is "seventy-five million, two hundred fifty thousand, two hundred ninety".