28533902 has 4 divisors (see below), whose sum is σ = 42800856. Its totient is φ = 14266950.

The previous prime is 28533899. The next prime is 28533907. The reversal of 28533902 is 20933582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20933582 = 2 ⋅10466791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28533907) 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, 7133474 + ... + 7133477.

It is an arithmetic number, because the mean of its divisors is an integer number (10700214).

Almost surely, 2^28533902 is an apocalyptic number.

28533902 is a deficient number, since it is larger than the sum of its proper divisors (14266954).

28533902 is a wasteful number, since it uses less digits than its factorization.

28533902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14266953.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 28533902 is about 5341.7133955314. The cubic root of 28533902 is about 305.5768068868.

The spelling of 28533902 in words is "twenty-eight million, five hundred thirty-three thousand, nine hundred two".