38566644 has 12 divisors (see below), whose sum is σ = 89988864. Its totient is φ = 12855544.

The previous prime is 38566631. The next prime is 38566651. The reversal of 38566644 is 44666583.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 38566596 and 38566605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1606932 + ... + 1606955.

It is an arithmetic number, because the mean of its divisors is an integer number (7499072).

Almost surely, 2^38566644 is an apocalyptic number.

It is an amenable number.

38566644 is an abundant number, since it is smaller than the sum of its proper divisors (51422220).

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

38566644 is a wasteful number, since it uses less digits than its factorization.

38566644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213894 (or 3213892 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 38566644 is about 6210.2048275399. The cubic root of 38566644 is about 337.8603930761.

The spelling of 38566644 in words is "thirty-eight million, five hundred sixty-six thousand, six hundred forty-four".