387790128 has 120 divisors (see below), whose sum is σ = 1253665296. Its totient is φ = 110592000.

The previous prime is 387790121. The next prime is 387790141. The reversal of 387790128 is 821097783.

It is not an unprimeable number, because it can be changed into a prime (387790121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19728 + ... + 34128.

Almost surely, 2^387790128 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 387790128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (626832648).

387790128 is an abundant number, since it is smaller than the sum of its proper divisors (865875168).

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

387790128 is a wasteful number, since it uses less digits than its factorization.

387790128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14443 (or 14434 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 387790128 is about 19692.3875647419. The cubic root of 387790128 is about 729.2317733009.

The spelling of 387790128 in words is "three hundred eighty-seven million, seven hundred ninety thousand, one hundred twenty-eight".