387622540 has 12 divisors (see below), whose sum is σ = 814007376. Its totient is φ = 155049008.

The previous prime is 387622523. The next prime is 387622561. The reversal of 387622540 is 45226783.

It is a self number, because there is not a number n which added to its sum of digits gives 387622540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9690544 + ... + 9690583.

It is an arithmetic number, because the mean of its divisors is an integer number (67833948).

Almost surely, 2^387622540 is an apocalyptic number.

It is an amenable number.

387622540 is an abundant number, since it is smaller than the sum of its proper divisors (426384836).

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

387622540 is a wasteful number, since it uses less digits than its factorization.

387622540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19381136 (or 19381134 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 387622540 is about 19688.1319581112. The cubic root of 387622540 is about 729.1267095093.

The spelling of 387622540 in words is "three hundred eighty-seven million, six hundred twenty-two thousand, five hundred forty".