164298440 has 16 divisors (see below), whose sum is σ = 369671580. Its totient is φ = 65719360.

The previous prime is 164298401. The next prime is 164298443. The reversal of 164298440 is 44892461.

It can be written as a sum of positive squares in 2 ways, for example, as 146942884 + 17355556 = 12122^2 + 4166^2 .

It is a junction number, because it is equal to n+sod(n) for n = 164298394 and 164298403.

It is not an unprimeable number, because it can be changed into a prime (164298443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2053691 + ... + 2053770.

Almost surely, 2^164298440 is an apocalyptic number.

164298440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164298440 is an abundant number, since it is smaller than the sum of its proper divisors (205373140).

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

164298440 is a wasteful number, since it uses less digits than its factorization.

164298440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4107472 (or 4107468 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 164298440 is about 12817.8953030519. The cubic root of 164298440 is about 547.7021931352.

The spelling of 164298440 in words is "one hundred sixty-four million, two hundred ninety-eight thousand, four hundred forty".