28497456 has 90 divisors (see below), whose sum is σ = 86433828. Its totient is φ = 8760960.

The previous prime is 28497451. The next prime is 28497461. The reversal of 28497456 is 65479482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28497451) and next prime (28497461).

It is not an unprimeable number, because it can be changed into a prime (28497451) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23751 + ... + 24921.

Almost surely, 2^28497456 is an apocalyptic number.

28497456 is a gapful number since it is divisible by the number (26) 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 28497456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43216914).

28497456 is an abundant number, since it is smaller than the sum of its proper divisors (57936372).

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

28497456 is a wasteful number, since it uses less digits than its factorization.

28497456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211 (or 1189 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 28497456 is about 5338.3008532678. The cubic root of 28497456 is about 305.4466482961.

The spelling of 28497456 in words is "twenty-eight million, four hundred ninety-seven thousand, four hundred fifty-six".