20743002 has 24 divisors (see below), whose sum is σ = 51363936. Its totient is φ = 5926536.

The previous prime is 20742983. The next prime is 20743013. The reversal of 20743002 is 20034702.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82188 + ... + 82439.

It is an arithmetic number, because the mean of its divisors is an integer number (2140164).

Almost surely, 2^20743002 is an apocalyptic number.

20743002 is an abundant number, since it is smaller than the sum of its proper divisors (30620934).

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

20743002 is a wasteful number, since it uses less digits than its factorization.

20743002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164642 (or 164639 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 20743002 is about 4554.4485945063. The cubic root of 20743002 is about 274.7623379162.

Adding to 20743002 its reverse (20034702), we get a palindrome (40777704).

The spelling of 20743002 in words is "twenty million, seven hundred forty-three thousand, two".