388878000 has 320 divisors, whose sum is σ = 1470763008. Its totient is φ = 86553600.

The previous prime is 388877927. The next prime is 388878019. The reversal of 388878000 is 878883.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 1973902 + ... + 1974098.

Almost surely, 2^388878000 is an apocalyptic number.

388878000 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 388878000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735381504).

388878000 is an abundant number, since it is smaller than the sum of its proper divisors (1081885008).

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

388878000 is a wasteful number, since it uses less digits than its factorization.

388878000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 388878000 is about 19719.9898580096. The cubic root of 388878000 is about 729.9130439991.

The spelling of 388878000 in words is "three hundred eighty-eight million, eight hundred seventy-eight thousand".