28774460 has 48 divisors (see below), whose sum is σ = 70997472. Its totient is φ = 9657600.

The previous prime is 28774457. The next prime is 28774469. The reversal of 28774460 is 6447782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28774469) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2171 + ... + 7890.

It is an arithmetic number, because the mean of its divisors is an integer number (1479114).

Almost surely, 2^28774460 is an apocalyptic number.

28774460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28774460 is an abundant number, since it is smaller than the sum of its proper divisors (42223012).

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

28774460 is a wasteful number, since it uses less digits than its factorization.

28774460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10094 (or 10092 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 28774460 is about 5364.1830692101. The cubic root of 28774460 is about 306.4331371651.

It can be divided in two parts, 2877 and 4460, that added together give a palindrome (7337).

The spelling of 28774460 in words is "twenty-eight million, seven hundred seventy-four thousand, four hundred sixty".