387790 has 32 divisors (see below), whose sum is σ = 796320. Its totient is φ = 134784.

The previous prime is 387781. The next prime is 387791. The reversal of 387790 is 97783.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387791) 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, 2392 + ... + 2548.

It is an arithmetic number, because the mean of its divisors is an integer number (24885).

2³⁸⁷⁷⁹⁰ is an apocalyptic number.

387790 is an abundant number, since it is smaller than the sum of its proper divisors (408530).

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

387790 is a wasteful number, since it uses less digits than its factorization.

387790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 387790 is about 622.7278699400. The cubic root of 387790 is about 72.9231693067.

The spelling of 387790 in words is "three hundred eighty-seven thousand, seven hundred ninety".