28736741 has 4 divisors (see below), whose sum is σ = 31349184. Its totient is φ = 26124300.

The previous prime is 28736731. The next prime is 28736789. The reversal of 28736741 is 14763782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28736741 - 2⁶ = 28736677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28736695 and 28736704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28736731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1306205 + ... + 1306226.

It is an arithmetic number, because the mean of its divisors is an integer number (7837296).

Almost surely, 2^28736741 is an apocalyptic number.

It is an amenable number.

28736741 is a deficient number, since it is larger than the sum of its proper divisors (2612443).

28736741 is a wasteful number, since it uses less digits than its factorization.

28736741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612442.

The product of its digits is 56448, while the sum is 38.

The square root of 28736741 is about 5360.6660966712. Note that the first 3 decimals coincide. The cubic root of 28736741 is about 306.2991826605.

The spelling of 28736741 in words is "twenty-eight million, seven hundred thirty-six thousand, seven hundred forty-one".