28421698 has 16 divisors (see below), whose sum is σ = 45691200. Its totient is φ = 13224816.

The previous prime is 28421693. The next prime is 28421713. The reversal of 28421698 is 89612482.

It is a self number, because there is not a number n which added to its sum of digits gives 28421698.

It is not an unprimeable number, because it can be changed into a prime (28421693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6648 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (2855700).

Almost surely, 2^28421698 is an apocalyptic number.

28421698 is a deficient number, since it is larger than the sum of its proper divisors (17269502).

28421698 is a wasteful number, since it uses less digits than its factorization.

28421698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16761.

The product of its digits is 55296, while the sum is 40.

The square root of 28421698 is about 5331.2004276711. The cubic root of 28421698 is about 305.1757403390.

The spelling of 28421698 in words is "twenty-eight million, four hundred twenty-one thousand, six hundred ninety-eight".