20029402 has 8 divisors (see below), whose sum is σ = 30777012. Its totient is φ = 9770400.

The previous prime is 20029397. The next prime is 20029403. The reversal of 20029402 is 20492002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19900521 + 128881 = 4461^2 + 359^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20029402.

It is not an unprimeable number, because it can be changed into a prime (20029403) 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, 122049 + ... + 122212.

Almost surely, 2^20029402 is an apocalyptic number.

20029402 is a deficient number, since it is larger than the sum of its proper divisors (10747610).

20029402 is a wasteful number, since it uses less digits than its factorization.

20029402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244304.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20029402 is about 4475.4219912764. The cubic root of 20029402 is about 271.5747120419.

The spelling of 20029402 in words is "twenty million, twenty-nine thousand, four hundred two".