22444402 has 4 divisors (see below), whose sum is σ = 33666606. Its totient is φ = 11222200.

The previous prime is 22444393. The next prime is 22444423. The reversal of 22444402 is 20444422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20444422 = 2 ⋅10222211.

It can be written as a sum of positive squares in only one way, i.e., 11758041 + 10686361 = 3429^2 + 3269^2 .

It is a super-2 number, since 2×22444402² = 1007502362275208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611099 + ... + 5611102.

Almost surely, 2^22444402 is an apocalyptic number.

22444402 is a deficient number, since it is larger than the sum of its proper divisors (11222204).

22444402 is a wasteful number, since it uses less digits than its factorization.

22444402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11222203.

The product of its (nonzero) digits is 2048, while the sum is 22.

The square root of 22444402 is about 4737.5523216108. The cubic root of 22444402 is about 282.0780847764.

Adding to 22444402 its reverse (20444422), we get a palindrome (42888824).

The spelling of 22444402 in words is "twenty-two million, four hundred forty-four thousand, four hundred two".