20165430 has 16 divisors (see below), whose sum is σ = 48397104. Its totient is φ = 5377440.

The previous prime is 20165429. The next prime is 20165449. The reversal of 20165430 is 3456102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20165397 and 20165406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336061 + ... + 336120.

It is an arithmetic number, because the mean of its divisors is an integer number (3024819).

Almost surely, 2^20165430 is an apocalyptic number.

20165430 is an abundant number, since it is smaller than the sum of its proper divisors (28231674).

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

20165430 is a wasteful number, since it uses less digits than its factorization.

20165430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672191.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20165430 is about 4490.5935019772. The cubic root of 20165430 is about 272.1881177754.

The spelling of 20165430 in words is "twenty million, one hundred sixty-five thousand, four hundred thirty".