91450144 has 24 divisors (see below), whose sum is σ = 180293148. Its totient is φ = 45661440.

The previous prime is 91450127. The next prime is 91450159. The reversal of 91450144 is 44105419.

It can be written as a sum of positive squares in 2 ways, for example, as 85747600 + 5702544 = 9260^2 + 2388^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 28594 + ... + 31630.

Almost surely, 2^91450144 is an apocalyptic number.

It is an amenable number.

91450144 is a deficient number, since it is larger than the sum of its proper divisors (88843004).

91450144 is a wasteful number, since it uses less digits than its factorization.

91450144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988 (or 3980 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 91450144 is about 9562.9568649032. The cubic root of 91450144 is about 450.5345811494.

The spelling of 91450144 in words is "ninety-one million, four hundred fifty thousand, one hundred forty-four".