91276512 has 96 divisors (see below), whose sum is σ = 254161152. Its totient is φ = 28621824.

The previous prime is 91276483. The next prime is 91276529. The reversal of 91276512 is 21567219.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×91276512² = 16662803285772288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147628 + ... + 148244.

It is an arithmetic number, because the mean of its divisors is an integer number (2647512).

Almost surely, 2^91276512 is an apocalyptic number.

91276512 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91276512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127080576).

91276512 is an abundant number, since it is smaller than the sum of its proper divisors (162884640).

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

91276512 is a wasteful number, since it uses less digits than its factorization.

91276512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720 (or 712 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 91276512 is about 9553.8741879931. The cubic root of 91276512 is about 450.2492643709.

The spelling of 91276512 in words is "ninety-one million, two hundred seventy-six thousand, five hundred twelve".