22878347 has 2 divisors, whose sum is σ = 22878348. Its totient is φ = 22878346.

The previous prime is 22878329. The next prime is 22878367. The reversal of 22878347 is 74387822.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22878347 is a prime.

It is a super-2 number, since 2×22878347² = 1046837522904818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22878367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11439173 + 11439174.

It is an arithmetic number, because the mean of its divisors is an integer number (11439174).

Almost surely, 2^22878347 is an apocalyptic number.

22878347 is a deficient number, since it is larger than the sum of its proper divisors (1).

22878347 is an equidigital number, since it uses as much as digits as its factorization.

22878347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150528, while the sum is 41.

The square root of 22878347 is about 4783.1315056143. The cubic root of 22878347 is about 283.8844128914.

The spelling of 22878347 in words is "twenty-two million, eight hundred seventy-eight thousand, three hundred forty-seven".