20335402 has 4 divisors (see below), whose sum is σ = 30503106. Its totient is φ = 10167700.

The previous prime is 20335397. The next prime is 20335421. The reversal of 20335402 is 20453302.

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., 13476241 + 6859161 = 3671^2 + 2619^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20335402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083849 + ... + 5083852.

Almost surely, 2^20335402 is an apocalyptic number.

20335402 is a deficient number, since it is larger than the sum of its proper divisors (10167704).

20335402 is a wasteful number, since it uses less digits than its factorization.

20335402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10167703.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 20335402 is about 4509.4791273494. The cubic root of 20335402 is about 272.9507261677.

Adding to 20335402 its reverse (20453302), we get a palindrome (40788704).

The spelling of 20335402 in words is "twenty million, three hundred thirty-five thousand, four hundred two".