386748720 has 120 divisors (see below), whose sum is σ = 1302586272. Its totient is φ = 102835200.

The previous prime is 386748701. The next prime is 386748737. The reversal of 386748720 is 27847683.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 374605 + ... + 375635.

Almost surely, 2^386748720 is an apocalyptic number.

386748720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 386748720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651293136).

386748720 is an abundant number, since it is smaller than the sum of its proper divisors (915837552).

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

386748720 is a wasteful number, since it uses less digits than its factorization.

386748720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1571 (or 1562 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 386748720 is about 19665.9278957287. The cubic root of 386748720 is about 728.5784056013.

The spelling of 386748720 in words is "three hundred eighty-six million, seven hundred forty-eight thousand, seven hundred twenty".