28874746 has 4 divisors (see below), whose sum is σ = 43312122. Its totient is φ = 14437372.

The previous prime is 28874743. The next prime is 28874761. The reversal of 28874746 is 64747882.

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

It can be written as a sum of positive squares in only one way, i.e., 15515721 + 13359025 = 3939^2 + 3655^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28874696 and 28874705.

It is not an unprimeable number, because it can be changed into a prime (28874743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7218685 + ... + 7218688.

Almost surely, 2^28874746 is an apocalyptic number.

28874746 is a deficient number, since it is larger than the sum of its proper divisors (14437376).

28874746 is a wasteful number, since it uses less digits than its factorization.

28874746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14437375.

The product of its digits is 602112, while the sum is 46.

The square root of 28874746 is about 5373.5226807002. The cubic root of 28874746 is about 306.7887224184.

The spelling of 28874746 in words is "twenty-eight million, eight hundred seventy-four thousand, seven hundred forty-six".