91140960 has 48 divisors (see below), whose sum is σ = 287095536. Its totient is φ = 24304128.

The previous prime is 91140937. The next prime is 91140983. The reversal of 91140960 is 6904119.

It is an interprime number because it is at equal distance from previous prime (91140937) and next prime (91140983).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 94459 + ... + 95418.

It is an arithmetic number, because the mean of its divisors is an integer number (5981157).

Almost surely, 2^91140960 is an apocalyptic number.

It is an amenable number.

91140960 is an abundant number, since it is smaller than the sum of its proper divisors (195954576).

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

91140960 is a wasteful number, since it uses less digits than its factorization.

91140960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189895 (or 189887 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 91140960 is about 9546.7774667686. Note that the first 3 decimals coincide. The cubic root of 91140960 is about 450.0262700713.

The spelling of 91140960 in words is "ninety-one million, one hundred forty thousand, nine hundred sixty".