38417820 has 192 divisors, whose sum is σ = 132765696. Its totient is φ = 8110080.

The previous prime is 38417801. The next prime is 38417831. The reversal of 38417820 is 2871483.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 396012 + ... + 396108.

It is an arithmetic number, because the mean of its divisors is an integer number (691488).

Almost surely, 2^38417820 is an apocalyptic number.

38417820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38417820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66382848).

38417820 is an abundant number, since it is smaller than the sum of its proper divisors (94347876).

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

38417820 is a wasteful number, since it uses less digits than its factorization.

38417820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 38417820 is about 6198.2110322253. The cubic root of 38417820 is about 337.4252454462.

The spelling of 38417820 in words is "thirty-eight million, four hundred seventeen thousand, eight hundred twenty".