90218036 has 6 divisors (see below), whose sum is σ = 157881570. Its totient is φ = 45109016.

The previous prime is 90218033. The next prime is 90218039. The reversal of 90218036 is 63081209.

It is an interprime number because it is at equal distance from previous prime (90218033) and next prime (90218039).

It can be written as a sum of positive squares in only one way, i.e., 87796900 + 2421136 = 9370^2 + 1556^2 .

It is a super-3 number, since 3×90218036³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90218033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11277251 + ... + 11277258.

It is an arithmetic number, because the mean of its divisors is an integer number (26313595).

Almost surely, 2^90218036 is an apocalyptic number.

It is an amenable number.

90218036 is a deficient number, since it is larger than the sum of its proper divisors (67663534).

90218036 is a wasteful number, since it uses less digits than its factorization.

90218036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22554513 (or 22554511 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 90218036 is about 9498.3175352270. The cubic root of 90218036 is about 448.5020744970.

The spelling of 90218036 in words is "ninety million, two hundred eighteen thousand, thirty-six".