28743506 has 16 divisors (see below), whose sum is σ = 47119968. Its totient is φ = 13041600.

The previous prime is 28743499. The next prime is 28743511. The reversal of 28743506 is 60534782.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18641 + ... + 20123.

It is an arithmetic number, because the mean of its divisors is an integer number (2944998).

Almost surely, 2^28743506 is an apocalyptic number.

28743506 is a deficient number, since it is larger than the sum of its proper divisors (18376462).

28743506 is a wasteful number, since it uses less digits than its factorization.

28743506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 28743506 is about 5361.2970445593. The cubic root of 28743506 is about 306.3232163693.

The spelling of 28743506 in words is "twenty-eight million, seven hundred forty-three thousand, five hundred six".