22105378 has 4 divisors (see below), whose sum is σ = 33158070. Its totient is φ = 11052688.

The previous prime is 22105373. The next prime is 22105403. The reversal of 22105378 is 87350122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17581249 + 4524129 = 4193^2 + 2127^2 .

It is not an unprimeable number, because it can be changed into a prime (22105373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5526343 + ... + 5526346.

Almost surely, 2^22105378 is an apocalyptic number.

22105378 is a deficient number, since it is larger than the sum of its proper divisors (11052692).

22105378 is a wasteful number, since it uses less digits than its factorization.

22105378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11052691.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 22105378 is about 4701.6356728271. The cubic root of 22105378 is about 280.6506044399.

The spelling of 22105378 in words is "twenty-two million, one hundred five thousand, three hundred seventy-eight".