91897282 has 16 divisors (see below), whose sum is σ = 144118080. Its totient is φ = 43865712.

The previous prime is 91897231. The next prime is 91897301. The reversal of 91897282 is 28279819.

It is a super-2 number, since 2×91897282² = 16890220877975048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 26569 + ... + 29827.

It is an arithmetic number, because the mean of its divisors is an integer number (9007380).

Almost surely, 2^91897282 is an apocalyptic number.

91897282 is a deficient number, since it is larger than the sum of its proper divisors (52220798).

91897282 is a wasteful number, since it uses less digits than its factorization.

91897282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897.

The product of its digits is 145152, while the sum is 46.

The square root of 91897282 is about 9586.3070053071. The cubic root of 91897282 is about 451.2676716452.

It can be divided in two parts, 9189 and 7282, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 91897282 in words is "ninety-one million, eight hundred ninety-seven thousand, two hundred eighty-two".