387651380 has 24 divisors (see below), whose sum is σ = 815845632. Its totient is φ = 154721952.

The previous prime is 387651379. The next prime is 387651421. The reversal of 387651380 is 83156783.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11672 + ... + 30191.

It is an arithmetic number, because the mean of its divisors is an integer number (33993568).

Almost surely, 2^387651380 is an apocalyptic number.

It is an amenable number.

387651380 is an abundant number, since it is smaller than the sum of its proper divisors (428194252).

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

387651380 is a wasteful number, since it uses less digits than its factorization.

387651380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42335 (or 42333 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 387651380 is about 19688.8643654224. The cubic root of 387651380 is about 729.1447919569.

The spelling of 387651380 in words is "three hundred eighty-seven million, six hundred fifty-one thousand, three hundred eighty".