90220415 has 8 divisors (see below), whose sum is σ = 108425328. Its totient is φ = 72069120.

The previous prime is 90220397. The next prime is 90220433. The reversal of 90220415 is 51402209.

It is an interprime number because it is at equal distance from previous prime (90220397) and next prime (90220433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 90220415 - 2¹² = 90216319 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 9602 + ... + 16511.

It is an arithmetic number, because the mean of its divisors is an integer number (13553166).

Almost surely, 2^90220415 is an apocalyptic number.

90220415 is a deficient number, since it is larger than the sum of its proper divisors (18204913).

90220415 is a wasteful number, since it uses less digits than its factorization.

90220415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26809.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 90220415 is about 9498.4427671066. The cubic root of 90220415 is about 448.5060167134.

The spelling of 90220415 in words is "ninety million, two hundred twenty thousand, four hundred fifteen".