38907744 has 96 divisors (see below), whose sum is σ = 109226880. Its totient is φ = 12091392.

The previous prime is 38907731. The next prime is 38907749. The reversal of 38907744 is 44770983.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 38907696 and 38907705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38907749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151264 + ... + 151520.

It is an arithmetic number, because the mean of its divisors is an integer number (1137780).

Almost surely, 2^38907744 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 38907744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54613440).

38907744 is an abundant number, since it is smaller than the sum of its proper divisors (70319136).

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

38907744 is a wasteful number, since it uses less digits than its factorization.

38907744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 38907744 is about 6237.6072335472. The cubic root of 38907744 is about 338.8535318045.

The spelling of 38907744 in words is "thirty-eight million, nine hundred seven thousand, seven hundred forty-four".