28480641 has 8 divisors (see below), whose sum is σ = 43399104. Its totient is φ = 16274640.

The previous prime is 28480619. The next prime is 28480651. The reversal of 28480641 is 14608482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28480641 - 2⁷ = 28480513 is a prime.

It is a super-2 number, since 2×28480641² = 1622293823541762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28480651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678090 + ... + 678131.

It is an arithmetic number, because the mean of its divisors is an integer number (5424888).

Almost surely, 2^28480641 is an apocalyptic number.

28480641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28480641 is a deficient number, since it is larger than the sum of its proper divisors (14918463).

28480641 is a wasteful number, since it uses less digits than its factorization.

28480641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356231.

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 28480641 is about 5336.7256815392. The cubic root of 28480641 is about 305.3865599394.

The spelling of 28480641 in words is "twenty-eight million, four hundred eighty thousand, six hundred forty-one".