28074480 has 160 divisors (see below), whose sum is σ = 105421824. Its totient is φ = 6033408.

The previous prime is 28074391. The next prime is 28074481. The reversal of 28074480 is 8447082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28074481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28069 + ... + 29051.

Almost surely, 2^28074480 is an apocalyptic number.

28074480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28074480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52710912).

28074480 is an abundant number, since it is smaller than the sum of its proper divisors (77347344).

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

28074480 is a wasteful number, since it uses less digits than its factorization.

28074480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1017 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 28074480 is about 5298.5356467613. The cubic root of 28074480 is about 303.9279030320.

The spelling of 28074480 in words is "twenty-eight million, seventy-four thousand, four hundred eighty".