164720450 has 24 divisors (see below), whose sum is σ = 308230272. Its totient is φ = 65490320.

The previous prime is 164720447. The next prime is 164720467. The reversal of 164720450 is 54027461.

164720450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1514 + ... + 18213.

It is an arithmetic number, because the mean of its divisors is an integer number (12842928).

Almost surely, 2^164720450 is an apocalyptic number.

164720450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164720450 is a deficient number, since it is larger than the sum of its proper divisors (143509822).

164720450 is a wasteful number, since it uses less digits than its factorization.

164720450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19906 (or 19901 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 164720450 is about 12834.3464968030. The cubic root of 164720450 is about 548.1707270812.

The spelling of 164720450 in words is "one hundred sixty-four million, seven hundred twenty thousand, four hundred fifty".