28426671 has 48 divisors (see below), whose sum is σ = 51455040. Its totient is φ = 14722560.

The previous prime is 28426663. The next prime is 28426687. The reversal of 28426671 is 17662482.

It is not a de Polignac number, because 28426671 - 2³ = 28426663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28426631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49675 + ... + 50243.

It is an arithmetic number, because the mean of its divisors is an integer number (1071980).

Almost surely, 2^28426671 is an apocalyptic number.

28426671 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

28426671 is a deficient number, since it is larger than the sum of its proper divisors (23028369).

28426671 is a wasteful number, since it uses less digits than its factorization.

28426671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 653 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 28426671 is about 5331.6668125456. Note that the first 3 decimals coincide. The cubic root of 28426671 is about 305.1935383660.

The spelling of 28426671 in words is "twenty-eight million, four hundred twenty-six thousand, six hundred seventy-one".