28741894 has 4 divisors (see below), whose sum is σ = 43112844. Its totient is φ = 14370946.

The previous prime is 28741891. The next prime is 28741913. The reversal of 28741894 is 49814782.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28741894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7185472 + ... + 7185475.

It is an arithmetic number, because the mean of its divisors is an integer number (10778211).

Almost surely, 2^28741894 is an apocalyptic number.

28741894 is a deficient number, since it is larger than the sum of its proper divisors (14370950).

28741894 is a wasteful number, since it uses less digits than its factorization.

28741894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14370949.

The product of its digits is 129024, while the sum is 43.

The square root of 28741894 is about 5361.1467056965. The cubic root of 28741894 is about 306.3174898322.

The spelling of 28741894 in words is "twenty-eight million, seven hundred forty-one thousand, eight hundred ninety-four".