28729682 has 8 divisors (see below), whose sum is σ = 43121676. Its totient is φ = 14355792.

The previous prime is 28729681. The next prime is 28729717. The reversal of 28729682 is 28692782.

It can be written as a sum of positive squares in 2 ways, for example, as 28526281 + 203401 = 5341^2 + 451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28729682² = 1650789255642248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28729681) 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, 608 + ... + 7604.

Almost surely, 2^28729682 is an apocalyptic number.

28729682 is a deficient number, since it is larger than the sum of its proper divisors (14391994).

28729682 is a wasteful number, since it uses less digits than its factorization.

28729682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9052.

The product of its digits is 193536, while the sum is 44.

The square root of 28729682 is about 5360.0076492483. The cubic root of 28729682 is about 306.2741004496.

The spelling of 28729682 in words is "twenty-eight million, seven hundred twenty-nine thousand, six hundred eighty-two".