36686390 has 32 divisors (see below), whose sum is σ = 72860256. Its totient is φ = 13213440.

The previous prime is 36686389. The next prime is 36686401. The reversal of 36686390 is 9368663.

It is a super-2 number, since 2×36686390² = 2691782422464200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1889 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (2276883).

Almost surely, 2^36686390 is an apocalyptic number.

36686390 is a deficient number, since it is larger than the sum of its proper divisors (36173866).

36686390 is a wasteful number, since it uses less digits than its factorization.

36686390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6944.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 36686390 is about 6056.9290898937. The cubic root of 36686390 is about 332.2780549101.

The spelling of 36686390 in words is "thirty-six million, six hundred eighty-six thousand, three hundred ninety".