28653512 has 8 divisors (see below), whose sum is σ = 53725350. Its totient is φ = 14326752.

The previous prime is 28653511. The next prime is 28653553. The reversal of 28653512 is 21535682.

28653512 = 749² + 750² + ... + 796².

It can be written as a sum of positive squares in only one way, i.e., 15007876 + 13645636 = 3874^2 + 3694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28653511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1790837 + ... + 1790852.

Almost surely, 2^28653512 is an apocalyptic number.

It is an amenable number.

28653512 is a deficient number, since it is larger than the sum of its proper divisors (25071838).

28653512 is a wasteful number, since it uses less digits than its factorization.

28653512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581695 (or 3581691 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 28653512 is about 5352.8975331123. The cubic root of 28653512 is about 306.0031896232.

The spelling of 28653512 in words is "twenty-eight million, six hundred fifty-three thousand, five hundred twelve".