90711020 has 48 divisors (see below), whose sum is σ = 195084288. Its totient is φ = 35421120.

The previous prime is 90711007. The next prime is 90711077. The reversal of 90711020 is 2011709.

It is a super-3 number, since 3×90711020³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 90710983 and 90711001.

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 15 ways as a sum of consecutive naturals, for example, 180089 + ... + 180591.

It is an arithmetic number, because the mean of its divisors is an integer number (4064256).

Almost surely, 2^90711020 is an apocalyptic number.

It is an amenable number.

90711020 is an abundant number, since it is smaller than the sum of its proper divisors (104373268).

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

90711020 is a wasteful number, since it uses less digits than its factorization.

90711020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710 (or 708 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 90711020 is about 9524.2333024764. The cubic root of 90711020 is about 449.3175168898.

Adding to 90711020 its reverse (2011709), we get a palindrome (92722729).

The spelling of 90711020 in words is "ninety million, seven hundred eleven thousand, twenty".