28463040 has 84 divisors (see below), whose sum is σ = 97910904. Its totient is φ = 7589376.

The previous prime is 28462999. The next prime is 28463041. The reversal of 28463040 is 4036482.

28463040 is a `hidden beast` number, since 28 + 4 + 630 + 4 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28462995 and 28463013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28463041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2062 + ... + 7821.

It is an arithmetic number, because the mean of its divisors is an integer number (1165606).

Almost surely, 2^28463040 is an apocalyptic number.

28463040 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 28463040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48955452).

28463040 is an abundant number, since it is smaller than the sum of its proper divisors (69447864).

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

28463040 is a wasteful number, since it uses less digits than its factorization.

28463040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9906 (or 9893 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 28463040 is about 5335.0763818337. The cubic root of 28463040 is about 305.3236374734.

It can be divided in two parts, 2846 and 3040, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 28463040 in words is "twenty-eight million, four hundred sixty-three thousand, forty".