17640052 has 12 divisors (see below), whose sum is σ = 30899680. Its totient is φ = 8811576.

The previous prime is 17640047. The next prime is 17640053. The reversal of 17640052 is 25004671.

It is a super-2 number, since 2×17640052² = 622342869125408, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17639999 and 17640026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17640053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6343 + ... + 8689.

Almost surely, 2^17640052 is an apocalyptic number.

It is an amenable number.

17640052 is a deficient number, since it is larger than the sum of its proper divisors (13259628).

17640052 is a wasteful number, since it uses less digits than its factorization.

17640052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230 (or 4228 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 17640052 is about 4200.0061904716. The cubic root of 17640052 is about 260.3154553707.

The spelling of 17640052 in words is "seventeen million, six hundred forty thousand, fifty-two".