90757290 has 32 divisors (see below), whose sum is σ = 234573696. Its totient is φ = 22340160.

The previous prime is 90757229. The next prime is 90757291. The reversal of 90757290 is 9275709.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (90757291) 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 15 ways as a sum of consecutive naturals, for example, 115966 + ... + 116745.

It is an arithmetic number, because the mean of its divisors is an integer number (7330428).

Almost surely, 2^90757290 is an apocalyptic number.

90757290 is an abundant number, since it is smaller than the sum of its proper divisors (143816406).

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

90757290 is a wasteful number, since it uses less digits than its factorization.

90757290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232734.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 90757290 is about 9526.6620597143. The cubic root of 90757290 is about 449.3939000667.

The spelling of 90757290 in words is "ninety million, seven hundred fifty-seven thousand, two hundred ninety".