38640086 has 16 divisors (see below), whose sum is σ = 58622400. Its totient is φ = 19100928.

The previous prime is 38640079. The next prime is 38640097. The reversal of 38640086 is 68004683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109286 + ... + 109638.

It is an arithmetic number, because the mean of its divisors is an integer number (3663900).

Almost surely, 2^38640086 is an apocalyptic number.

38640086 is a deficient number, since it is larger than the sum of its proper divisors (19982314).

38640086 is a wasteful number, since it uses less digits than its factorization.

38640086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 38640086 is about 6216.1150246758. The cubic root of 38640086 is about 338.0747182598.

The spelling of 38640086 in words is "thirty-eight million, six hundred forty thousand, eighty-six".