20113402 has 4 divisors (see below), whose sum is σ = 30170106. Its totient is φ = 10056700.

The previous prime is 20113391. The next prime is 20113403. The reversal of 20113402 is 20431102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17799961 + 2313441 = 4219^2 + 1521^2 .

It is not an unprimeable number, because it can be changed into a prime (20113403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5028349 + ... + 5028352.

Almost surely, 2^20113402 is an apocalyptic number.

20113402 is a deficient number, since it is larger than the sum of its proper divisors (10056704).

20113402 is a wasteful number, since it uses less digits than its factorization.

20113402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10056703.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20113402 is about 4484.7967623963. The cubic root of 20113402 is about 271.9538290287.

Adding to 20113402 its reverse (20431102), we get a palindrome (40544504).

The spelling of 20113402 in words is "twenty million, one hundred thirteen thousand, four hundred two".