38994816 has 128 divisors (see below), whose sum is σ = 120441600. Its totient is φ = 10948608.

The previous prime is 38994797. The next prime is 38994847. The reversal of 38994816 is 61849983.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 239151 + ... + 239313.

It is an arithmetic number, because the mean of its divisors is an integer number (940950).

Almost surely, 2^38994816 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 38994816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60220800).

38994816 is an abundant number, since it is smaller than the sum of its proper divisors (81446784).

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

38994816 is a wasteful number, since it uses less digits than its factorization.

38994816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 264 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 38994816 is about 6244.5829324303. The cubic root of 38994816 is about 339.1061179603.

The spelling of 38994816 in words is "thirty-eight million, nine hundred ninety-four thousand, eight hundred sixteen".