91478372 has 24 divisors (see below), whose sum is σ = 165529056. Its totient is φ = 44206848.

The previous prime is 91478353. The next prime is 91478399. The reversal of 91478372 is 27387419.

It is a super-3 number, since 3×91478372³ (a number of 25 digits) contains 333 as substring.

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, 13943 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (6897044).

Almost surely, 2^91478372 is an apocalyptic number.

It is an amenable number.

91478372 is a deficient number, since it is larger than the sum of its proper divisors (74050684).

91478372 is a wasteful number, since it uses less digits than its factorization.

91478372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5627 (or 5625 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 91478372 is about 9564.4326543711. The cubic root of 91478372 is about 450.5809320218.

The spelling of 91478372 in words is "ninety-one million, four hundred seventy-eight thousand, three hundred seventy-two".