28572398 has 4 divisors (see below), whose sum is σ = 42858600. Its totient is φ = 14286198.

The previous prime is 28572391. The next prime is 28572403. The reversal of 28572398 is 89327582.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28572391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7143098 + ... + 7143101.

It is an arithmetic number, because the mean of its divisors is an integer number (10714650).

Almost surely, 2^28572398 is an apocalyptic number.

28572398 is a deficient number, since it is larger than the sum of its proper divisors (14286202).

28572398 is a wasteful number, since it uses less digits than its factorization.

28572398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14286201.

The product of its digits is 241920, while the sum is 44.

The square root of 28572398 is about 5345.3155192187. The cubic root of 28572398 is about 305.7141662819.

The spelling of 28572398 in words is "twenty-eight million, five hundred seventy-two thousand, three hundred ninety-eight".