28025724098 has 4 divisors (see below), whose sum is σ = 42038586150. Its totient is φ = 14012862048.

The previous prime is 28025724059. The next prime is 28025724101. The reversal of 28025724098 is 89042752082.

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., 20338467769 + 7687256329 = 142613^2 + 87677^2 .

It is a super-2 number, since 2×28025724098² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7006431023 + ... + 7006431026.

Almost surely, 2^28025724098 is an apocalyptic number.

28025724098 is a deficient number, since it is larger than the sum of its proper divisors (14012862052).

28025724098 is a wasteful number, since it uses less digits than its factorization.

28025724098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012862051.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 28025724098 in words is "twenty-eight billion, twenty-five million, seven hundred twenty-four thousand, ninety-eight".