20165146 has 8 divisors (see below), whose sum is σ = 30286944. Its totient is φ = 10069500.

The previous prime is 20165143. The next prime is 20165149. The reversal of 20165146 is 64156102.

It is an interprime number because it is at equal distance from previous prime (20165143) and next prime (20165149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20165146² = 813266226402632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20165146.

It is not an unprimeable number, because it can be changed into a prime (20165141) 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, 4480 + ... + 7771.

It is an arithmetic number, because the mean of its divisors is an integer number (3785868).

Almost surely, 2^20165146 is an apocalyptic number.

20165146 is a deficient number, since it is larger than the sum of its proper divisors (10121798).

20165146 is a wasteful number, since it uses less digits than its factorization.

20165146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13076.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 20165146 is about 4490.5618802105. The cubic root of 20165146 is about 272.1868399816.

The spelling of 20165146 in words is "twenty million, one hundred sixty-five thousand, one hundred forty-six".