387022428 has 48 divisors (see below), whose sum is σ = 1080579360. Its totient is φ = 119083392.

The previous prime is 387022423. The next prime is 387022451. The reversal of 387022428 is 824220783.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 387022392 and 387022401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387022423) 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, 136425 + ... + 139232.

It is an arithmetic number, because the mean of its divisors is an integer number (22512070).

Almost surely, 2^387022428 is an apocalyptic number.

It is an amenable number.

387022428 is an abundant number, since it is smaller than the sum of its proper divisors (693556932).

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

387022428 is a wasteful number, since it uses less digits than its factorization.

387022428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275683 (or 275675 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 387022428 is about 19672.8856043032. The cubic root of 387022428 is about 728.7502404412.

The spelling of 387022428 in words is "three hundred eighty-seven million, twenty-two thousand, four hundred twenty-eight".