28857450 has 24 divisors (see below), whose sum is σ = 71566848. Its totient is φ = 7695280.

The previous prime is 28857443. The next prime is 28857467. The reversal of 28857450 is 5475882.

It is a super-3 number, since 3×28857450³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28857399 and 28857408.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96042 + ... + 96341.

It is an arithmetic number, because the mean of its divisors is an integer number (2981952).

Almost surely, 2^28857450 is an apocalyptic number.

28857450 is an abundant number, since it is smaller than the sum of its proper divisors (42709398).

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

28857450 is a wasteful number, since it uses less digits than its factorization.

28857450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192398 (or 192393 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 28857450 is about 5371.9130670553. The cubic root of 28857450 is about 306.7274546059.

The spelling of 28857450 in words is "twenty-eight million, eight hundred fifty-seven thousand, four hundred fifty".