38699856 has 100 divisors (see below), whose sum is σ = 120677172. Its totient is φ = 11902464.

The previous prime is 38699849. The next prime is 38699879. The reversal of 38699856 is 65899683.

It can be written as a sum of positive squares in 2 ways, for example, as 11451456 + 27248400 = 3384^2 + 5220^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 15700 + ... + 17996.

Almost surely, 2^38699856 is an apocalyptic number.

38699856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38699856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60338586).

38699856 is an abundant number, since it is smaller than the sum of its proper divisors (81977316).

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

38699856 is a wasteful number, since it uses less digits than its factorization.

38699856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2315 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 38699856 is about 6220.9208321598. The cubic root of 38699856 is about 338.2489442005.

The spelling of 38699856 in words is "thirty-eight million, six hundred ninety-nine thousand, eight hundred fifty-six".