91941240 has 32 divisors (see below), whose sum is σ = 275824080. Its totient is φ = 24517632.

The previous prime is 91941221. The next prime is 91941271. The reversal of 91941240 is 4214919.

It is a super-2 number, since 2×91941240² = 16906383225475200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 91941198 and 91941207.

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, 382969 + ... + 383208.

Almost surely, 2^91941240 is an apocalyptic number.

It is an amenable number.

91941240 is an abundant number, since it is smaller than the sum of its proper divisors (183882840).

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

91941240 is a wasteful number, since it uses less digits than its factorization.

91941240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766191 (or 766187 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 91941240 is about 9588.5994806332. The cubic root of 91941240 is about 451.3396130629.

The spelling of 91941240 in words is "ninety-one million, nine hundred forty-one thousand, two hundred forty".