164240415 has 24 divisors (see below), whose sum is σ = 287211600. Its totient is φ = 86817024.

The previous prime is 164240411. The next prime is 164240423. The reversal of 164240415 is 514042461.

164240415 is a `hidden beast` number, since 1 + 6 + 4 + 240 + 415 = 666.

164240415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164240415 - 2² = 164240411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164240411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11065 + ... + 21234.

It is an arithmetic number, because the mean of its divisors is an integer number (11967150).

Almost surely, 2^164240415 is an apocalyptic number.

164240415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164240415 is a deficient number, since it is larger than the sum of its proper divisors (122971185).

164240415 is a wasteful number, since it uses less digits than its factorization.

164240415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32423 (or 32420 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 164240415 is about 12815.6316660553. The cubic root of 164240415 is about 547.6377085266.

Adding to 164240415 its reverse (514042461), we get a palindrome (678282876).

The spelling of 164240415 in words is "one hundred sixty-four million, two hundred forty thousand, four hundred fifteen".