28961486 has 4 divisors (see below), whose sum is σ = 43442232. Its totient is φ = 14480742.

The previous prime is 28961483. The next prime is 28961497. The reversal of 28961486 is 68416982.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68416982 = 2 ⋅34208491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28961483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7240370 + ... + 7240373.

It is an arithmetic number, because the mean of its divisors is an integer number (10860558).

Almost surely, 2^28961486 is an apocalyptic number.

28961486 is a deficient number, since it is larger than the sum of its proper divisors (14480746).

28961486 is a wasteful number, since it uses less digits than its factorization.

28961486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14480745.

The product of its digits is 165888, while the sum is 44.

The square root of 28961486 is about 5381.5876839461. The cubic root of 28961486 is about 307.0956140270.

The spelling of 28961486 in words is "twenty-eight million, nine hundred sixty-one thousand, four hundred eighty-six".