28377628449 has 8 divisors (see below), whose sum is σ = 37850357472. Its totient is φ = 18911659200.

The previous prime is 28377628399. The next prime is 28377628453. The reversal of 28377628449 is 94482677382.

It is a happy number.

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

It is not a de Polignac number, because 28377628449 - 2⁹ = 28377627937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28377628392 and 28377628401.

It is not an unprimeable number, because it can be changed into a prime (28377628469) 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, 1680139 + ... + 1696944.

It is an arithmetic number, because the mean of its divisors is an integer number (4731294684).

Almost surely, 2^28377628449 is an apocalyptic number.

It is an amenable number.

28377628449 is a deficient number, since it is larger than the sum of its proper divisors (9472729023).

28377628449 is a wasteful number, since it uses less digits than its factorization.

28377628449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379887.

The product of its digits is 32514048, while the sum is 60.

The spelling of 28377628449 in words is "twenty-eight billion, three hundred seventy-seven million, six hundred twenty-eight thousand, four hundred forty-nine".