28258498 has 4 divisors (see below), whose sum is σ = 42387750. Its totient is φ = 14129248.

The previous prime is 28258493. The next prime is 28258507. The reversal of 28258498 is 89485282.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 94249 = 5307^2 + 307^2 .

It is not an unprimeable number, because it can be changed into a prime (28258493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7064623 + ... + 7064626.

Almost surely, 2^28258498 is an apocalyptic number.

28258498 is a deficient number, since it is larger than the sum of its proper divisors (14129252).

28258498 is a wasteful number, since it uses less digits than its factorization.

28258498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14129251.

The product of its digits is 368640, while the sum is 46.

The square root of 28258498 is about 5315.8722708508. The cubic root of 28258498 is about 304.5905030345.

The spelling of 28258498 in words is "twenty-eight million, two hundred fifty-eight thousand, four hundred ninety-eight".