387576220 has 48 divisors (see below), whose sum is σ = 861331968. Its totient is φ = 146189120.

The previous prime is 387576209. The next prime is 387576223. The reversal of 387576220 is 22675783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387576223) 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, 26727 + ... + 38593.

It is an arithmetic number, because the mean of its divisors is an integer number (17944416).

Almost surely, 2^387576220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 387576220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (430665984).

387576220 is an abundant number, since it is smaller than the sum of its proper divisors (473755748).

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

387576220 is a wasteful number, since it uses less digits than its factorization.

387576220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970 (or 11968 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 387576220 is about 19686.9555797741. The cubic root of 387576220 is about 729.0976653654.

The spelling of 387576220 in words is "three hundred eighty-seven million, five hundred seventy-six thousand, two hundred twenty".