91259672 has 64 divisors (see below), whose sum is σ = 208422720. Its totient is φ = 36569088.

The previous prime is 91259671. The next prime is 91259677. The reversal of 91259672 is 27695219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91259671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244478 + ... + 244850.

It is an arithmetic number, because the mean of its divisors is an integer number (3256605).

Almost surely, 2^91259672 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 91259672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104211360).

91259672 is an abundant number, since it is smaller than the sum of its proper divisors (117163048).

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

91259672 is a wasteful number, since it uses less digits than its factorization.

91259672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 656 counting only the distinct ones).

The product of its digits is 68040, while the sum is 41.

The square root of 91259672 is about 9552.9928294750. The cubic root of 91259672 is about 450.2215731873.

The spelling of 91259672 in words is "ninety-one million, two hundred fifty-nine thousand, six hundred seventy-two".