38724912 has 80 divisors (see below), whose sum is σ = 117715680. Its totient is φ = 12146688.

The previous prime is 38724911. The next prime is 38724913. The reversal of 38724912 is 21942783.

It is an interprime number because it is at equal distance from previous prime (38724911) and next prime (38724913).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (38724911) 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, 4708 + ... + 9980.

It is an arithmetic number, because the mean of its divisors is an integer number (1471446).

Almost surely, 2^38724912 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 38724912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58857840).

38724912 is an abundant number, since it is smaller than the sum of its proper divisors (78990768).

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

38724912 is a wasteful number, since it uses less digits than its factorization.

38724912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307 (or 5295 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 38724912 is about 6222.9343560735. The cubic root of 38724912 is about 338.3219275654.

The spelling of 38724912 in words is "thirty-eight million, seven hundred twenty-four thousand, nine hundred twelve".