28379830 has 8 divisors (see below), whose sum is σ = 51083712. Its totient is φ = 11351928.

The previous prime is 28379809. The next prime is 28379833. The reversal of 28379830 is 3897382.

It is a happy number.

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 (28379833) 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, 1418982 + ... + 1419001.

It is an arithmetic number, because the mean of its divisors is an integer number (6385464).

Almost surely, 2^28379830 is an apocalyptic number.

28379830 is a deficient number, since it is larger than the sum of its proper divisors (22703882).

28379830 is a wasteful number, since it uses less digits than its factorization.

28379830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2837990.

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

The square root of 28379830 is about 5327.2722851381. The cubic root of 28379830 is about 305.0258152475.

The spelling of 28379830 in words is "twenty-eight million, three hundred seventy-nine thousand, eight hundred thirty".