28986148 has 6 divisors (see below), whose sum is σ = 50725766. Its totient is φ = 14493072.

The previous prime is 28986137. The next prime is 28986149. The reversal of 28986148 is 84168982.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 9290304 = 4438^2 + 3048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28986098 and 28986107.

It is not an unprimeable number, because it can be changed into a prime (28986149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623265 + ... + 3623272.

Almost surely, 2^28986148 is an apocalyptic number.

It is an amenable number.

28986148 is a deficient number, since it is larger than the sum of its proper divisors (21739618).

28986148 is a wasteful number, since it uses less digits than its factorization.

28986148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7246541 (or 7246539 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 28986148 is about 5383.8785276044. The cubic root of 28986148 is about 307.1827578439.

The spelling of 28986148 in words is "twenty-eight million, nine hundred eighty-six thousand, one hundred forty-eight".