28698377 has 4 divisors (see below), whose sum is σ = 28821780. Its totient is φ = 28574976.

The previous prime is 28698361. The next prime is 28698389. The reversal of 28698377 is 77389682.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13868176 + 14830201 = 3724^2 + 3851^2 .

It is a cyclic number.

It is not a de Polignac number, because 28698377 - 2⁴ = 28698361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28698877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61352 + ... + 61817.

It is an arithmetic number, because the mean of its divisors is an integer number (7205445).

Almost surely, 2^28698377 is an apocalyptic number.

It is an amenable number.

28698377 is a deficient number, since it is larger than the sum of its proper divisors (123403).

28698377 is a wasteful number, since it uses less digits than its factorization.

28698377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123402.

The product of its digits is 1016064, while the sum is 50.

The square root of 28698377 is about 5357.0866149429. The cubic root of 28698377 is about 306.1628172213.

The spelling of 28698377 in words is "twenty-eight million, six hundred ninety-eight thousand, three hundred seventy-seven".