164449240 has 32 divisors (see below), whose sum is σ = 377887680. Its totient is φ = 64379392.

The previous prime is 164449231. The next prime is 164449249. The reversal of 164449240 is 42944461.

It is an interprime number because it is at equal distance from previous prime (164449231) and next prime (164449249).

It is a junction number, because it is equal to n+sod(n) for n = 164449196 and 164449205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164449249) 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, 41857 + ... + 45616.

It is an arithmetic number, because the mean of its divisors is an integer number (11808990).

Almost surely, 2^164449240 is an apocalyptic number.

164449240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164449240 is an abundant number, since it is smaller than the sum of its proper divisors (213438440).

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

164449240 is a wasteful number, since it uses less digits than its factorization.

164449240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87531 (or 87527 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 164449240 is about 12823.7763548808. The cubic root of 164449240 is about 547.8697099100.

The spelling of 164449240 in words is "one hundred sixty-four million, four hundred forty-nine thousand, two hundred forty".