28898355 has 32 divisors (see below), whose sum is σ = 49397760. Its totient is φ = 14394240.

The previous prime is 28898341. The next prime is 28898357. The reversal of 28898355 is 55389882.

It is not a de Polignac number, because 28898355 - 2⁴ = 28898339 is a prime.

It is a super-2 number, since 2×28898355² = 1670229843412050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28898357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12414 + ... + 14556.

It is an arithmetic number, because the mean of its divisors is an integer number (1543680).

Almost surely, 2^28898355 is an apocalyptic number.

28898355 is a deficient number, since it is larger than the sum of its proper divisors (20499405).

28898355 is a wasteful number, since it uses less digits than its factorization.

28898355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 691200, while the sum is 48.

The square root of 28898355 is about 5375.7190216751. The cubic root of 28898355 is about 306.8723133622.

The spelling of 28898355 in words is "twenty-eight million, eight hundred ninety-eight thousand, three hundred fifty-five".