22501378 has 8 divisors (see below), whose sum is σ = 33884172. Its totient is φ = 11206656.

The previous prime is 22501343. The next prime is 22501403. The reversal of 22501378 is 87310522.

It can be written as a sum of positive squares in 2 ways, for example, as 22496049 + 5329 = 4743^2 + 73^2 .

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

It is a cake number, because a cake can be divided into 22501378 parts by 513 planar cuts.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21375 + ... + 22402.

Almost surely, 2^22501378 is an apocalyptic number.

22501378 is a deficient number, since it is larger than the sum of its proper divisors (11382794).

22501378 is a wasteful number, since it uses less digits than its factorization.

22501378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44036.

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

The square root of 22501378 is about 4743.5617419825. The cubic root of 22501378 is about 282.3165718695.

The spelling of 22501378 in words is "twenty-two million, five hundred one thousand, three hundred seventy-eight".