90618150 has 72 divisors (see below), whose sum is σ = 261445320. Its totient is φ = 20711040.

The previous prime is 90618149. The next prime is 90618197. The reversal of 90618150 is 5181609.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1186 + ... + 13514.

It is an arithmetic number, because the mean of its divisors is an integer number (3631185).

Almost surely, 2^90618150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90618150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130722660).

90618150 is an abundant number, since it is smaller than the sum of its proper divisors (170827170).

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

90618150 is a wasteful number, since it uses less digits than its factorization.

90618150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358 (or 12346 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 90618150 is about 9519.3565959050. The cubic root of 90618150 is about 449.1641273446.

Adding to 90618150 its reverse (5181609), we get a palindrome (95799759).

The spelling of 90618150 in words is "ninety million, six hundred eighteen thousand, one hundred fifty".