91402480 has 40 divisors (see below), whose sum is σ = 228860352. Its totient is φ = 33748224.

The previous prime is 91402471. The next prime is 91402511. The reversal of 91402480 is 8420419.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42904 + ... + 44983.

Almost surely, 2^91402480 is an apocalyptic number.

It is an amenable number.

91402480 is an abundant number, since it is smaller than the sum of its proper divisors (137457872).

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

91402480 is a wasteful number, since it uses less digits than its factorization.

91402480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87913 (or 87907 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 91402480 is about 9560.4644238656. The cubic root of 91402480 is about 450.4562943685.

Adding to 91402480 its reverse (8420419), we get a palindrome (99822899).

The spelling of 91402480 in words is "ninety-one million, four hundred two thousand, four hundred eighty".