538626715 has 16 divisors (see below), whose sum is σ = 729427680. Its totient is φ = 378219520.

The previous prime is 538626713. The next prime is 538626731. The reversal of 538626715 is 517626835.

It is not a de Polignac number, because 538626715 - 2¹ = 538626713 is a prime.

It is a super-2 number, since 2×538626715² = 580237476223382450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (538626713) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 167254 + ... + 170443.

It is an arithmetic number, because the mean of its divisors is an integer number (45589230).

Almost surely, 2^538626715 is an apocalyptic number.

538626715 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

538626715 is a deficient number, since it is larger than the sum of its proper divisors (190800965).

538626715 is a wasteful number, since it uses less digits than its factorization.

538626715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337742.

The product of its digits is 302400, while the sum is 43.

The square root of 538626715 is about 23208.3328785159. The cubic root of 538626715 is about 813.6343898972.

The spelling of 538626715 in words is "five hundred thirty-eight million, six hundred twenty-six thousand, seven hundred fifteen".