91241808 has 40 divisors (see below), whose sum is σ = 269381568. Its totient is φ = 26068992.

The previous prime is 91241807. The next prime is 91241809. The reversal of 91241808 is 80814219.

It is an interprime number because it is at equal distance from previous prime (91241807) and next prime (91241809).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91241807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135441 + ... + 136112.

Almost surely, 2^91241808 is an apocalyptic number.

It is an amenable number.

91241808 is an abundant number, since it is smaller than the sum of its proper divisors (178139760).

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

91241808 is a wasteful number, since it uses less digits than its factorization.

91241808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271571 (or 271565 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 91241808 is about 9552.0577887699. The cubic root of 91241808 is about 450.1921944455.

The spelling of 91241808 in words is "ninety-one million, two hundred forty-one thousand, eight hundred eight".