28732742 has 8 divisors (see below), whose sum is σ = 43170600. Its totient is φ = 14342544.

The previous prime is 28732741. The next prime is 28732763. The reversal of 28732742 is 24723782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28732741) 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, 10367 + ... + 12842.

It is an arithmetic number, because the mean of its divisors is an integer number (5396325).

Almost surely, 2^28732742 is an apocalyptic number.

28732742 is a deficient number, since it is larger than the sum of its proper divisors (14437858).

28732742 is a wasteful number, since it uses less digits than its factorization.

28732742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23830.

The product of its digits is 37632, while the sum is 35.

The square root of 28732742 is about 5360.2930890018. The cubic root of 28732742 is about 306.2849738206.

The spelling of 28732742 in words is "twenty-eight million, seven hundred thirty-two thousand, seven hundred forty-two".