28736834 has 48 divisors (see below), whose sum is σ = 54369792. Its totient is φ = 11313792.

The previous prime is 28736833. The next prime is 28736837. The reversal of 28736834 is 43863782.

It is a junction number, because it is equal to n+sod(n) for n = 28736791 and 28736800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28736833) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78119 + ... + 78485.

It is an arithmetic number, because the mean of its divisors is an integer number (1132704).

Almost surely, 2^28736834 is an apocalyptic number.

28736834 is a deficient number, since it is larger than the sum of its proper divisors (25632958).

28736834 is a wasteful number, since it uses less digits than its factorization.

28736834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 440 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 28736834 is about 5360.6747709593. The cubic root of 28736834 is about 306.2995130830.

The spelling of 28736834 in words is "twenty-eight million, seven hundred thirty-six thousand, eight hundred thirty-four".