164306240 has 56 divisors (see below), whose sum is σ = 447153792. Its totient is φ = 56332800.

The previous prime is 164306237. The next prime is 164306249. The reversal of 164306240 is 42603461.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164306249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34436 + ... + 38915.

Almost surely, 2^164306240 is an apocalyptic number.

164306240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164306240 is an abundant number, since it is smaller than the sum of its proper divisors (282847552).

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

164306240 is an equidigital number, since it uses as much as digits as its factorization.

164306240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73375 (or 73365 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 164306240 is about 12818.1995615609. The cubic root of 164306240 is about 547.7108603092.

The spelling of 164306240 in words is "one hundred sixty-four million, three hundred six thousand, two hundred forty".