90206136 has 80 divisors (see below), whose sum is σ = 255218040. Its totient is φ = 29764800.

The previous prime is 90206119. The next prime is 90206189. The reversal of 90206136 is 63160209.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 68686 + ... + 69986.

Almost surely, 2^90206136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90206136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127609020).

90206136 is an abundant number, since it is smaller than the sum of its proper divisors (165011904).

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

90206136 is a wasteful number, since it uses less digits than its factorization.

90206136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 90206136 is about 9497.6910878381. The cubic root of 90206136 is about 448.4823540892.

The spelling of 90206136 in words is "ninety million, two hundred six thousand, one hundred thirty-six".