64172030 has 32 divisors (see below), whose sum is σ = 124806528. Its totient is φ = 23616000.

The previous prime is 64172027. The next prime is 64172083. The reversal of 64172030 is 3027146.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 64171987 and 64172005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51515 + ... + 52745.

It is an arithmetic number, because the mean of its divisors is an integer number (3900204).

Almost surely, 2^64172030 is an apocalyptic number.

64172030 is a deficient number, since it is larger than the sum of its proper divisors (60634498).

64172030 is a wasteful number, since it uses less digits than its factorization.

64172030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1652.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 64172030 is about 8010.7446595182. The cubic root of 64172030 is about 400.3580751931.

Adding to 64172030 its reverse (3027146), we get a palindrome (67199176).

The spelling of 64172030 in words is "sixty-four million, one hundred seventy-two thousand, thirty".