22378634 has 8 divisors (see below), whose sum is σ = 33626340. Its totient is φ = 11169856.

The previous prime is 22378591. The next prime is 22378639. The reversal of 22378634 is 43687322.

It can be written as a sum of positive squares in 2 ways, for example, as 19333609 + 3045025 = 4397^2 + 1745^2 .

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

It is a Curzon number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 22378594 and 22378603.

It is not an unprimeable number, because it can be changed into a prime (22378639) 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, 8249 + ... + 10620.

Almost surely, 2^22378634 is an apocalyptic number.

22378634 is a deficient number, since it is larger than the sum of its proper divisors (11247706).

22378634 is a wasteful number, since it uses less digits than its factorization.

22378634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19464.

The product of its digits is 48384, while the sum is 35.

The square root of 22378634 is about 4730.6060922465. The cubic root of 22378634 is about 281.8022942325.

The spelling of 22378634 in words is "twenty-two million, three hundred seventy-eight thousand, six hundred thirty-four".