38660556 has 48 divisors (see below), whose sum is σ = 99348480. Its totient is φ = 11603520.

The previous prime is 38660537. The next prime is 38660561. The reversal of 38660556 is 65506683.

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, 13045 + ... + 15731.

It is an arithmetic number, because the mean of its divisors is an integer number (2069760).

Almost surely, 2^38660556 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 38660556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49674240).

38660556 is an abundant number, since it is smaller than the sum of its proper divisors (60687924).

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

38660556 is a wasteful number, since it uses less digits than its factorization.

38660556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814 (or 2812 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 38660556 is about 6217.7613334704. The cubic root of 38660556 is about 338.1344072901.

The spelling of 38660556 in words is "thirty-eight million, six hundred sixty thousand, five hundred fifty-six".