28552838 has 4 divisors (see below), whose sum is σ = 42829260. Its totient is φ = 14276418.

The previous prime is 28552837. The next prime is 28552841. The reversal of 28552838 is 83825582.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 28552795 and 28552804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28552837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7138208 + ... + 7138211.

It is an arithmetic number, because the mean of its divisors is an integer number (10707315).

Almost surely, 2^28552838 is an apocalyptic number.

28552838 is a deficient number, since it is larger than the sum of its proper divisors (14276422).

28552838 is a wasteful number, since it uses less digits than its factorization.

28552838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14276421.

The product of its digits is 153600, while the sum is 41.

The square root of 28552838 is about 5343.4855665567. The cubic root of 28552838 is about 305.6443887510.

The spelling of 28552838 in words is "twenty-eight million, five hundred fifty-two thousand, eight hundred thirty-eight".