28722348 has 36 divisors (see below), whose sum is σ = 72808008. Its totient is φ = 9547200.

The previous prime is 28722329. The next prime is 28722349. The reversal of 28722348 is 84322782.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28722349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15048 + ... + 16848.

Almost surely, 2^28722348 is an apocalyptic number.

It is an amenable number.

28722348 is an abundant number, since it is smaller than the sum of its proper divisors (44085660).

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

28722348 is a wasteful number, since it uses less digits than its factorization.

28722348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254 (or 2249 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 28722348 is about 5359.3234647668. The cubic root of 28722348 is about 306.2480367499.

The spelling of 28722348 in words is "twenty-eight million, seven hundred twenty-two thousand, three hundred forty-eight".