91280134 has 16 divisors (see below), whose sum is σ = 149617296. Its totient is φ = 41421600.

The previous prime is 91280129. The next prime is 91280141. The reversal of 91280134 is 43108219.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11404 + ... + 17680.

It is an arithmetic number, because the mean of its divisors is an integer number (9351081).

Almost surely, 2^91280134 is an apocalyptic number.

91280134 is a deficient number, since it is larger than the sum of its proper divisors (58337162).

91280134 is a wasteful number, since it uses less digits than its factorization.

91280134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6951.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 91280134 is about 9554.0637427223. The cubic root of 91280134 is about 450.2552198324.

The spelling of 91280134 in words is "ninety-one million, two hundred eighty thousand, one hundred thirty-four".