90240115 has 12 divisors (see below), whose sum is σ = 125968176. Its totient is φ = 61878768.

The previous prime is 90240113. The next prime is 90240133. The reversal of 90240115 is 51104209.

It is not a de Polignac number, because 90240115 - 2¹ = 90240113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90240113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 183919 + ... + 184408.

It is an arithmetic number, because the mean of its divisors is an integer number (10497348).

Almost surely, 2^90240115 is an apocalyptic number.

90240115 is a deficient number, since it is larger than the sum of its proper divisors (35728061).

90240115 is a wasteful number, since it uses less digits than its factorization.

90240115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368346 (or 368339 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 90240115 is about 9499.4797225953. The cubic root of 90240115 is about 448.5386587176.

It can be divided in two parts, 9024011 and 5, that added together give a square (9024016 = 3004²).

The spelling of 90240115 in words is "ninety million, two hundred forty thousand, one hundred fifteen".