28698140 has 24 divisors (see below), whose sum is σ = 60867072. Its totient is φ = 11364800.

The previous prime is 28698127. The next prime is 28698143. The reversal of 28698140 is 4189682.

It is a junction number, because it is equal to n+sod(n) for n = 28698094 and 28698103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28698143) 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, 5084 + ... + 9123.

It is an arithmetic number, because the mean of its divisors is an integer number (2536128).

Almost surely, 2^28698140 is an apocalyptic number.

28698140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28698140 is an abundant number, since it is smaller than the sum of its proper divisors (32168932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28698140 is a wasteful number, since it uses less digits than its factorization.

28698140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14317 (or 14315 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 28698140 is about 5357.0644946650. The cubic root of 28698140 is about 306.1619744235.

The spelling of 28698140 in words is "twenty-eight million, six hundred ninety-eight thousand, one hundred forty".