387755390 has 48 divisors (see below), whose sum is σ = 800591904. Its totient is φ = 134861760.

The previous prime is 387755387. The next prime is 387755399. The reversal of 387755390 is 93557783.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387755399) 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, 20864 + ... + 34796.

It is an arithmetic number, because the mean of its divisors is an integer number (16678998).

Almost surely, 2^387755390 is an apocalyptic number.

387755390 is an abundant number, since it is smaller than the sum of its proper divisors (412836514).

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

387755390 is a wasteful number, since it uses less digits than its factorization.

387755390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985 (or 13974 counting only the distinct ones).

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 387755390 is about 19691.5055290346. The cubic root of 387755390 is about 729.2099979401.

The spelling of 387755390 in words is "three hundred eighty-seven million, seven hundred fifty-five thousand, three hundred ninety".