28486426 has 4 divisors (see below), whose sum is σ = 42729642. Its totient is φ = 14243212.

The previous prime is 28486421. The next prime is 28486429. The reversal of 28486426 is 62468482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62468482 = 2 ⋅31234241.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 11553201 = 4115^2 + 3399^2 .

It is a super-2 number, since 2×28486426² = 1622952932506952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28486421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7121605 + ... + 7121608.

Almost surely, 2^28486426 is an apocalyptic number.

28486426 is a deficient number, since it is larger than the sum of its proper divisors (14243216).

28486426 is a wasteful number, since it uses less digits than its factorization.

28486426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14243215.

The product of its digits is 147456, while the sum is 40.

The square root of 28486426 is about 5337.2676530225. The cubic root of 28486426 is about 305.4072352892.

The spelling of 28486426 in words is "twenty-eight million, four hundred eighty-six thousand, four hundred twenty-six".