387615426 has 16 divisors (see below), whose sum is σ = 845706528. Its totient is φ = 117459200.

The previous prime is 387615407. The next prime is 387615433. The reversal of 387615426 is 624516783.

It is a super-2 number, since 2×387615426² = 300491436946322952, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2936415 + ... + 2936546.

It is an arithmetic number, because the mean of its divisors is an integer number (52856658).

Almost surely, 2^387615426 is an apocalyptic number.

387615426 is an abundant number, since it is smaller than the sum of its proper divisors (458091102).

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

387615426 is a wasteful number, since it uses less digits than its factorization.

387615426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5872977.

The product of its digits is 241920, while the sum is 42.

The square root of 387615426 is about 19687.9512900657. The cubic root of 387615426 is about 729.1222489507.

The spelling of 387615426 in words is "three hundred eighty-seven million, six hundred fifteen thousand, four hundred twenty-six".