387429744 has 80 divisors (see below), whose sum is σ = 1083770912. Its totient is φ = 118554624.

The previous prime is 387429739. The next prime is 387429751. The reversal of 387429744 is 447924783.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 387429693 and 387429702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118824 + ... + 122040.

Almost surely, 2^387429744 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 387429744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541885456).

387429744 is an abundant number, since it is smaller than the sum of its proper divisors (696341168).

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

387429744 is a wasteful number, since it uses less digits than its factorization.

387429744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434 (or 3428 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 48.

The square root of 387429744 is about 19683.2350999524. The cubic root of 387429744 is about 729.0058049255.

The spelling of 387429744 in words is "three hundred eighty-seven million, four hundred twenty-nine thousand, seven hundred forty-four".