28474742 has 4 divisors (see below), whose sum is σ = 42712116. Its totient is φ = 14237370.

The previous prime is 28474741. The next prime is 28474751. The reversal of 28474742 is 24747482.

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 = 28474696 and 28474705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28474741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7118684 + ... + 7118687.

It is an arithmetic number, because the mean of its divisors is an integer number (10678029).

Almost surely, 2^28474742 is an apocalyptic number.

28474742 is a deficient number, since it is larger than the sum of its proper divisors (14237374).

28474742 is a wasteful number, since it uses less digits than its factorization.

28474742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14237373.

The product of its digits is 100352, while the sum is 38.

The square root of 28474742 is about 5336.1729732084. The cubic root of 28474742 is about 305.3654742751.

The spelling of 28474742 in words is "twenty-eight million, four hundred seventy-four thousand, seven hundred forty-two".