28477008 has 200 divisors, whose sum is σ = 97706048. Its totient is φ = 7838208.

The previous prime is 28476983. The next prime is 28477019. The reversal of 28477008 is 80077482.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 390060 + ... + 390132.

Almost surely, 2^28477008 is an apocalyptic number.

28477008 is a gapful number since it is divisible by the number (28) 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 28477008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48853024).

28477008 is an abundant number, since it is smaller than the sum of its proper divisors (69229040).

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

28477008 is a wasteful number, since it uses less digits than its factorization.

28477008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 28477008 is about 5336.3852934360. The cubic root of 28477008 is about 305.3735743170.

The spelling of 28477008 in words is "twenty-eight million, four hundred seventy-seven thousand, eight".