91020036 has 24 divisors (see below), whose sum is σ = 215551840. Its totient is φ = 29886912.

The previous prime is 91020029. The next prime is 91020049. The reversal of 91020036 is 63002019.

It is a junction number, because it is equal to n+sod(n) for n = 91019994 and 91020021.

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, 55801 + ... + 57408.

Almost surely, 2^91020036 is an apocalyptic number.

It is an amenable number.

91020036 is an abundant number, since it is smaller than the sum of its proper divisors (124531804).

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

91020036 is a wasteful number, since it uses less digits than its factorization.

91020036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113283 (or 113281 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 91020036 is about 9540.4421281196. The cubic root of 91020036 is about 449.8271533706.

The spelling of 91020036 in words is "ninety-one million, twenty thousand, thirty-six".