28379263 has 12 divisors (see below), whose sum is σ = 32370408. Its totient is φ = 24672560.

The previous prime is 28379251. The next prime is 28379287. The reversal of 28379263 is 36297382.

It is not a de Polignac number, because 28379263 - 2¹³ = 28371071 is a prime.

It is a super-3 number, since 3×28379263³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28379233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3381 + ... + 8257.

It is an arithmetic number, because the mean of its divisors is an integer number (2697534).

Almost surely, 2^28379263 is an apocalyptic number.

28379263 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28379263 is a deficient number, since it is larger than the sum of its proper divisors (3991145).

28379263 is a wasteful number, since it uses less digits than its factorization.

28379263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934 (or 4911 counting only the distinct ones).

The product of its digits is 108864, while the sum is 40.

The square root of 28379263 is about 5327.2190681443. The cubic root of 28379263 is about 305.0237838660.

It can be divided in two parts, 2837 and 9263, that added together give a square (12100 = 110²).

The spelling of 28379263 in words is "twenty-eight million, three hundred seventy-nine thousand, two hundred sixty-three".