28413649 has 8 divisors (see below), whose sum is σ = 32065920. Its totient is φ = 24939600.

The previous prime is 28413643. The next prime is 28413673. The reversal of 28413649 is 94631482.

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

It is a cyclic number.

It is not a de Polignac number, because 28413649 - 2³ = 28413641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28413641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44217 + ... + 44854.

It is an arithmetic number, because the mean of its divisors is an integer number (4008240).

Almost surely, 2^28413649 is an apocalyptic number.

28413649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

28413649 is a deficient number, since it is larger than the sum of its proper divisors (3652271).

28413649 is a wasteful number, since it uses less digits than its factorization.

28413649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89111.

The product of its digits is 41472, while the sum is 37.

The square root of 28413649 is about 5330.4454785693. The cubic root of 28413649 is about 305.1469291182.

The spelling of 28413649 in words is "twenty-eight million, four hundred thirteen thousand, six hundred forty-nine".