28991482 has 8 divisors (see below), whose sum is σ = 46832436. Its totient is φ = 13380672.

The previous prime is 28991467. The next prime is 28991489. The reversal of 28991482 is 28419982.

It can be written as a sum of positive squares in 2 ways, for example, as 27573001 + 1418481 = 5251^2 + 1191^2 .

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 (28991489) 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, 557503 + ... + 557554.

Almost surely, 2^28991482 is an apocalyptic number.

28991482 is a deficient number, since it is larger than the sum of its proper divisors (17840954).

28991482 is a wasteful number, since it uses less digits than its factorization.

28991482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115072.

The product of its digits is 82944, while the sum is 43.

The square root of 28991482 is about 5384.3738726058. The cubic root of 28991482 is about 307.2015991693.

The spelling of 28991482 in words is "twenty-eight million, nine hundred ninety-one thousand, four hundred eighty-two".