20332402 has 4 divisors (see below), whose sum is σ = 30498606. Its totient is φ = 10166200.

The previous prime is 20332397. The next prime is 20332409. The reversal of 20332402 is 20423302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20423302 = 2 ⋅10211651.

It can be written as a sum of positive squares in only one way, i.e., 13315201 + 7017201 = 3649^2 + 2649^2 .

It is not an unprimeable number, because it can be changed into a prime (20332409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5083099 + ... + 5083102.

Almost surely, 2^20332402 is an apocalyptic number.

20332402 is a deficient number, since it is larger than the sum of its proper divisors (10166204).

20332402 is a wasteful number, since it uses less digits than its factorization.

20332402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10166203.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20332402 is about 4509.1464824288. The cubic root of 20332402 is about 272.9373030670.

Adding to 20332402 its reverse (20423302), we get a palindrome (40755704).

The spelling of 20332402 in words is "twenty million, three hundred thirty-two thousand, four hundred two".