38081988 has 144 divisors (see below), whose sum is σ = 118634880. Its totient is φ = 10450944.

The previous prime is 38081987. The next prime is 38081999. The reversal of 38081988 is 88918083.

38081988 = T₂₃₇ + T₂₃₈ + ... + T₆₂₂.

It is not an unprimeable number, because it can be changed into a prime (38081987) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197220 + ... + 197412.

Almost surely, 2^38081988 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 38081988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59317440).

38081988 is an abundant number, since it is smaller than the sum of its proper divisors (80552892).

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

38081988 is a wasteful number, since it uses less digits than its factorization.

38081988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 38081988 is about 6171.0605247396. The cubic root of 38081988 is about 336.4391579057.

The spelling of 38081988 in words is "thirty-eight million, eighty-one thousand, nine hundred eighty-eight".