28961494 has 8 divisors (see below), whose sum is σ = 44366688. Its totient is φ = 14172600.

The previous prime is 28961483. The next prime is 28961497. The reversal of 28961494 is 49416982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28961494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28961497) 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, 153957 + ... + 154144.

It is an arithmetic number, because the mean of its divisors is an integer number (5545836).

Almost surely, 2^28961494 is an apocalyptic number.

28961494 is a deficient number, since it is larger than the sum of its proper divisors (15405194).

28961494 is a wasteful number, since it uses less digits than its factorization.

28961494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308150.

The product of its digits is 124416, while the sum is 43.

The square root of 28961494 is about 5381.5884272211. The cubic root of 28961494 is about 307.0956423033.

The spelling of 28961494 in words is "twenty-eight million, nine hundred sixty-one thousand, four hundred ninety-four".