22403002 has 4 divisors (see below), whose sum is σ = 33604506. Its totient is φ = 11201500.

The previous prime is 22402999. The next prime is 22403009. The reversal of 22403002 is 20030422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20030422 = 2 ⋅10015211.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 303601 = 4701^2 + 551^2 .

It is a super-2 number, since 2×22403002² = 1003788997224008, which contains 22 as substring.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22403009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5600749 + ... + 5600752.

Almost surely, 2^22403002 is an apocalyptic number.

22403002 is a deficient number, since it is larger than the sum of its proper divisors (11201504).

22403002 is a wasteful number, since it uses less digits than its factorization.

22403002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11201503.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 22403002 is about 4733.1809599887. The cubic root of 22403002 is about 281.9045415717.

Adding to 22403002 its reverse (20030422), we get a palindrome (42433424).

The spelling of 22403002 in words is "twenty-two million, four hundred three thousand, two".