28523661230 has 16 divisors (see below), whose sum is σ = 51344718480. Its totient is φ = 11408991552.

The previous prime is 28523661217. The next prime is 28523661233. The reversal of 28523661230 is 3216632582.

It is a happy number.

It is a super-2 number, since 2×28523661230² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28523661233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295457 + ... + 379923.

It is an arithmetic number, because the mean of its divisors is an integer number (3209044905).

Almost surely, 2^28523661230 is an apocalyptic number.

28523661230 is a deficient number, since it is larger than the sum of its proper divisors (22821057250).

28523661230 is a wasteful number, since it uses less digits than its factorization.

28523661230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118243.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 28523661230 in words is "twenty-eight billion, five hundred twenty-three million, six hundred sixty-one thousand, two hundred thirty".