28660478 has 16 divisors (see below), whose sum is σ = 53599104. Its totient is φ = 11166360.

The previous prime is 28660477. The next prime is 28660483. The reversal of 28660478 is 87406682.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92900 + ... + 93207.

It is an arithmetic number, because the mean of its divisors is an integer number (3349944).

Almost surely, 2^28660478 is an apocalyptic number.

28660478 is a deficient number, since it is larger than the sum of its proper divisors (24938626).

28660478 is a wasteful number, since it uses less digits than its factorization.

28660478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186127.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 28660478 is about 5353.5481692052. The cubic root of 28660478 is about 306.0279852515.

It can be divided in two parts, 286604 and 78, that added together give a palindrome (286682).

The spelling of 28660478 in words is "twenty-eight million, six hundred sixty thousand, four hundred seventy-eight".