28654938 has 32 divisors (see below), whose sum is σ = 68577600. Its totient is φ = 8816688.

The previous prime is 28654937. The next prime is 28654957. The reversal of 28654938 is 83945682.

It is a super-2 number, since 2×28654938² = 1642210943567688, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28654893 and 28654902.

It is not an unprimeable number, because it can be changed into a prime (28654931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19708 + ... + 21111.

It is an arithmetic number, because the mean of its divisors is an integer number (2143050).

Almost surely, 2^28654938 is an apocalyptic number.

28654938 is an abundant number, since it is smaller than the sum of its proper divisors (39922662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28654938 is a wasteful number, since it uses less digits than its factorization.

28654938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40843 (or 40837 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 28654938 is about 5353.0307303433. The cubic root of 28654938 is about 306.0082658282.

It can be divided in two parts, 28654 and 938, that added together give a palindrome (29592).

The spelling of 28654938 in words is "twenty-eight million, six hundred fifty-four thousand, nine hundred thirty-eight".