20161602 has 16 divisors (see below), whose sum is σ = 44803680. Its totient is φ = 6720516.

The previous prime is 20161601. The next prime is 20161607. The reversal of 20161602 is 20616102.

It is a happy number.

20161602 is a `hidden beast` number, since 2 + 0 + 1 + 61 + 602 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20161601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186628 + ... + 186735.

It is an arithmetic number, because the mean of its divisors is an integer number (2800230).

Almost surely, 2^20161602 is an apocalyptic number.

20161602 is an abundant number, since it is smaller than the sum of its proper divisors (24642078).

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

20161602 is a wasteful number, since it uses less digits than its factorization.

20161602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373374 (or 373368 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20161602 is about 4490.1672574638. The cubic root of 20161602 is about 272.1708935448.

Adding to 20161602 its reverse (20616102), we get a palindrome (40777704).

The spelling of 20161602 in words is "twenty million, one hundred sixty-one thousand, six hundred two".