387420715 has 32 divisors (see below), whose sum is σ = 527083200. Its totient is φ = 270789120.

The previous prime is 387420713. The next prime is 387420721. The reversal of 387420715 is 517024783.

It is not a de Polignac number, because 387420715 - 2¹ = 387420713 is a prime.

It is a super-2 number, since 2×387420715² = 300189620822222450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (387420713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 466921 + ... + 467749.

It is an arithmetic number, because the mean of its divisors is an integer number (16471350).

Almost surely, 2^387420715 is an apocalyptic number.

387420715 is a deficient number, since it is larger than the sum of its proper divisors (139662485).

387420715 is a wasteful number, since it uses less digits than its factorization.

387420715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 387420715 is about 19683.0057409939. The cubic root of 387420715 is about 729.0001417529. Note that the first 3 decimals are identical.

The spelling of 387420715 in words is "three hundred eighty-seven million, four hundred twenty thousand, seven hundred fifteen".