387788380 has 24 divisors (see below), whose sum is σ = 930692448. Its totient is φ = 132955968.

The previous prime is 387788351. The next prime is 387788381. The reversal of 387788380 is 83887783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387788381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384819 + ... + 1385098.

It is an arithmetic number, because the mean of its divisors is an integer number (38778852).

Almost surely, 2^387788380 is an apocalyptic number.

It is an amenable number.

387788380 is an abundant number, since it is smaller than the sum of its proper divisors (542904068).

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

387788380 is a wasteful number, since it uses less digits than its factorization.

387788380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769933 (or 2769931 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 387788380 is about 19692.3431820594. The cubic root of 387788380 is about 729.2306776059.

The spelling of 387788380 in words is "three hundred eighty-seven million, seven hundred eighty-eight thousand, three hundred eighty".