28748522 has 8 divisors (see below), whose sum is σ = 47043072. Its totient is φ = 13067500.

The previous prime is 28748521. The next prime is 28748543. The reversal of 28748522 is 22584782.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28748521) 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, 653354 + ... + 653397.

It is an arithmetic number, because the mean of its divisors is an integer number (5880384).

Almost surely, 2^28748522 is an apocalyptic number.

28748522 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28748522 is a deficient number, since it is larger than the sum of its proper divisors (18294550).

28748522 is a wasteful number, since it uses less digits than its factorization.

28748522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306764.

The product of its digits is 71680, while the sum is 38.

The square root of 28748522 is about 5361.7648213998. The cubic root of 28748522 is about 306.3410340505.

The spelling of 28748522 in words is "twenty-eight million, seven hundred forty-eight thousand, five hundred twenty-two".