38479920 has 80 divisors (see below), whose sum is σ = 124492032. Its totient is φ = 9813760.

The previous prime is 38479919. The next prime is 38479927. The reversal of 38479920 is 2997483.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38479927) 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, 2035 + ... + 9005.

Almost surely, 2^38479920 is an apocalyptic number.

38479920 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 38479920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62246016).

38479920 is an abundant number, since it is smaller than the sum of its proper divisors (86012112).

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

38479920 is a wasteful number, since it uses less digits than its factorization.

38479920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7010 (or 7004 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 38479920 is about 6203.2185194462. The cubic root of 38479920 is about 337.6069564988.

The spelling of 38479920 in words is "thirty-eight million, four hundred seventy-nine thousand, nine hundred twenty".