23278049 has 4 divisors (see below), whose sum is σ = 24647364. Its totient is φ = 21908736.

The previous prime is 23278043. The next prime is 23278063. The reversal of 23278049 is 94087232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 10368400 + 12909649 = 3220^2 + 3593^2 .

It is a cyclic number.

It is not a de Polignac number, because 23278049 - 2⁴ = 23278033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23278043) 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, 684632 + ... + 684665.

It is an arithmetic number, because the mean of its divisors is an integer number (6161841).

Almost surely, 2^23278049 is an apocalyptic number.

It is an amenable number.

23278049 is a deficient number, since it is larger than the sum of its proper divisors (1369315).

23278049 is a wasteful number, since it uses less digits than its factorization.

23278049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369314.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 23278049 is about 4824.7330496101. The cubic root of 23278049 is about 285.5281025947.

The spelling of 23278049 in words is "twenty-three million, two hundred seventy-eight thousand, forty-nine".