38821716 has 36 divisors (see below), whose sum is σ = 98644000. Its totient is φ = 12873168.

The previous prime is 38821709. The next prime is 38821721. The reversal of 38821716 is 61712883.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4455 + ... + 9873.

Almost surely, 2^38821716 is an apocalyptic number.

38821716 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

38821716 is an abundant number, since it is smaller than the sum of its proper divisors (59822284).

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

38821716 is a wasteful number, since it uses less digits than its factorization.

38821716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5628 (or 5623 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 38821716 is about 6230.7075039677. The cubic root of 38821716 is about 338.6036038123.

The spelling of 38821716 in words is "thirty-eight million, eight hundred twenty-one thousand, seven hundred sixteen".