28379146 has 4 divisors (see below), whose sum is σ = 42568722. Its totient is φ = 14189572.

The previous prime is 28379089. The next prime is 28379161. The reversal of 28379146 is 64197382.

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., 21298225 + 7080921 = 4615^2 + 2661^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28379099 and 28379108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7094785 + ... + 7094788.

Almost surely, 2^28379146 is an apocalyptic number.

28379146 is a deficient number, since it is larger than the sum of its proper divisors (14189576).

28379146 is a wasteful number, since it uses less digits than its factorization.

28379146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14189575.

The product of its digits is 72576, while the sum is 40.

The square root of 28379146 is about 5327.2080867937. The cubic root of 28379146 is about 305.0233646886.

The spelling of 28379146 in words is "twenty-eight million, three hundred seventy-nine thousand, one hundred forty-six".