28363380 has 48 divisors (see below), whose sum is σ = 79666944. Its totient is φ = 7539840.

The previous prime is 28363343. The next prime is 28363381. The reversal of 28363380 is 8336382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28363381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27270 + ... + 28290.

It is an arithmetic number, because the mean of its divisors is an integer number (1659728).

Almost surely, 2^28363380 is an apocalyptic number.

28363380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28363380 is an abundant number, since it is smaller than the sum of its proper divisors (51303564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28363380 is a wasteful number, since it uses less digits than its factorization.

28363380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496 (or 1494 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 28363380 is about 5325.7281192340. The cubic root of 28363380 is about 304.9668691057.

It can be divided in two parts, 2836 and 3380, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 28363380 in words is "twenty-eight million, three hundred sixty-three thousand, three hundred eighty".