91472740 has 12 divisors (see below), whose sum is σ = 192092796. Its totient is φ = 36589088.

The previous prime is 91472701. The next prime is 91472741. The reversal of 91472740 is 4727419.

It can be written as a sum of positive squares in 2 ways, for example, as 18472804 + 72999936 = 4298^2 + 8544^2 .

It is a super-3 number, since 3×91472740³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91472696 and 91472705.

It is not an unprimeable number, because it can be changed into a prime (91472741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286799 + ... + 2286838.

It is an arithmetic number, because the mean of its divisors is an integer number (16007733).

Almost surely, 2^91472740 is an apocalyptic number.

It is an amenable number.

91472740 is an abundant number, since it is smaller than the sum of its proper divisors (100620056).

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

91472740 is a wasteful number, since it uses less digits than its factorization.

91472740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573646 (or 4573644 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 91472740 is about 9564.1382256845. The cubic root of 91472740 is about 450.5716849403.

The spelling of 91472740 in words is "ninety-one million, four hundred seventy-two thousand, seven hundred forty".