89720215 has 16 divisors (see below), whose sum is σ = 117585216. Its totient is φ = 65318400.

The previous prime is 89720207. The next prime is 89720233. The reversal of 89720215 is 51202798.

It is not a de Polignac number, because 89720215 - 2³ = 89720207 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 5106 + ... + 14335.

It is an arithmetic number, because the mean of its divisors is an integer number (7349076).

Almost surely, 2^89720215 is an apocalyptic number.

89720215 is a deficient number, since it is larger than the sum of its proper divisors (27865001).

89720215 is a wasteful number, since it uses less digits than its factorization.

89720215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19530.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 89720215 is about 9472.0755381279. The cubic root of 89720215 is about 447.6756111945.

It can be divided in two parts, 897 and 20215, that added together give a palindrome (21112).

The spelling of 89720215 in words is "eighty-nine million, seven hundred twenty thousand, two hundred fifteen".