91142916 has 48 divisors (see below), whose sum is σ = 226275840. Its totient is φ = 28454400.

The previous prime is 91142897. The next prime is 91142941. The reversal of 91142916 is 61924119.

It is a super-2 number, since 2×91142916² = 16614062273966112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45741 + ... + 47691.

It is an arithmetic number, because the mean of its divisors is an integer number (4714080).

Almost surely, 2^91142916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91142916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113137920).

91142916 is an abundant number, since it is smaller than the sum of its proper divisors (135132924).

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

91142916 is a wasteful number, since it uses less digits than its factorization.

91142916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2202 counting only the distinct ones).

The product of its digits is 3888, while the sum is 33.

The square root of 91142916 is about 9546.8799091640. The cubic root of 91142916 is about 450.0294894255.

The spelling of 91142916 in words is "ninety-one million, one hundred forty-two thousand, nine hundred sixteen".