28726546 has 8 divisors (see below), whose sum is σ = 43138620. Its totient is φ = 14347008.

The previous prime is 28726543. The next prime is 28726567. The reversal of 28726546 is 64562782.

It can be written as a sum of positive squares in 2 ways, for example, as 21762225 + 6964321 = 4665^2 + 2639^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28726499 and 28726508.

It is not an unprimeable number, because it can be changed into a prime (28726543) 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, 5791 + ... + 9538.

Almost surely, 2^28726546 is an apocalyptic number.

28726546 is a deficient number, since it is larger than the sum of its proper divisors (14412074).

28726546 is a wasteful number, since it uses less digits than its factorization.

28726546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16268.

The product of its digits is 161280, while the sum is 40.

The square root of 28726546 is about 5359.7151043689. The cubic root of 28726546 is about 306.2629562199.

The spelling of 28726546 in words is "twenty-eight million, seven hundred twenty-six thousand, five hundred forty-six".