387220532 has 24 divisors (see below), whose sum is σ = 717024000. Its totient is φ = 182462976.

The previous prime is 387220489. The next prime is 387220573. The reversal of 387220532 is 235022783.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469 + ... + 27867.

It is an arithmetic number, because the mean of its divisors is an integer number (29876000).

Almost surely, 2^387220532 is an apocalyptic number.

It is an amenable number.

387220532 is a deficient number, since it is larger than the sum of its proper divisors (329803468).

387220532 is a wasteful number, since it uses less digits than its factorization.

387220532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26615 (or 26613 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 387220532 is about 19677.9199103970. The cubic root of 387220532 is about 728.8745602925.

The spelling of 387220532 in words is "three hundred eighty-seven million, two hundred twenty thousand, five hundred thirty-two".