90156874 has 8 divisors (see below), whose sum is σ = 136017540. Its totient is φ = 44817696.

The previous prime is 90156863. The next prime is 90156877. The reversal of 90156874 is 47865109.

It can be written as a sum of positive squares in 2 ways, for example, as 90155025 + 1849 = 9495^2 + 43^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (90156877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129939 + ... + 130630.

Almost surely, 2^90156874 is an apocalyptic number.

90156874 is a deficient number, since it is larger than the sum of its proper divisors (45860666).

90156874 is a wasteful number, since it uses less digits than its factorization.

90156874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260744.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 90156874 is about 9495.0973665361. The cubic root of 90156874 is about 448.4006997745.

It can be divided in two parts, 901 and 56874, that added together give a palindrome (57775).

The spelling of 90156874 in words is "ninety million, one hundred fifty-six thousand, eight hundred seventy-four".