387828742 has 16 divisors (see below), whose sum is σ = 667383552. Its totient is φ = 165578760.

The previous prime is 387828647. The next prime is 387828751. The reversal of 387828742 is 247828783.

It is a super-2 number, since 2×387828742² = 300822266242605128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48984 + ... + 56347.

It is an arithmetic number, because the mean of its divisors is an integer number (41711472).

Almost surely, 2^387828742 is an apocalyptic number.

387828742 is a deficient number, since it is larger than the sum of its proper divisors (279554810).

387828742 is a wasteful number, since it uses less digits than its factorization.

387828742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105603.

The product of its digits is 1204224, while the sum is 49.

The square root of 387828742 is about 19693.3679699537. The cubic root of 387828742 is about 729.2559767889.

It can be divided in two parts, 38782 and 8742, that added together give a square (47524 = 218²).

The spelling of 387828742 in words is "three hundred eighty-seven million, eight hundred twenty-eight thousand, seven hundred forty-two".