23207428 has 12 divisors (see below), whose sum is σ = 41379660. Its totient is φ = 11384672.

The previous prime is 23207419. The next prime is 23207447. The reversal of 23207428 is 82470232.

It can be written as a sum of positive squares in 2 ways, for example, as 18507204 + 4700224 = 4302^2 + 2168^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23207396 and 23207405.

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, 54523 + ... + 54946.

It is an arithmetic number, because the mean of its divisors is an integer number (3448305).

Almost surely, 2^23207428 is an apocalyptic number.

It is an amenable number.

23207428 is a deficient number, since it is larger than the sum of its proper divisors (18172232).

23207428 is a wasteful number, since it uses less digits than its factorization.

23207428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109526 (or 109524 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 23207428 is about 4817.4088470878. The cubic root of 23207428 is about 285.2390648256.

The spelling of 23207428 in words is "twenty-three million, two hundred seven thousand, four hundred twenty-eight".