94991220 has 36 divisors (see below), whose sum is σ = 288140580. Its totient is φ = 25330944.

The previous prime is 94991147. The next prime is 94991249. The reversal of 94991220 is 2219949.

It can be written as a sum of positive squares in 2 ways, for example, as 11048976 + 83942244 = 3324^2 + 9162^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263685 + ... + 264044.

It is an arithmetic number, because the mean of its divisors is an integer number (8003905).

Almost surely, 2^94991220 is an apocalyptic number.

94991220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

94991220 is an abundant number, since it is smaller than the sum of its proper divisors (193149360).

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

94991220 is a wasteful number, since it uses less digits than its factorization.

94991220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527744 (or 527739 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 94991220 is about 9746.3439299052. The cubic root of 94991220 is about 456.2762061635.

The spelling of 94991220 in words is "ninety-four million, nine hundred ninety-one thousand, two hundred twenty".