28440461469 has 24 divisors (see below), whose sum is σ = 46029643200. Its totient is φ = 15545095104.

The previous prime is 28440461437. The next prime is 28440461479. The reversal of 28440461469 is 96416404482.

It is not a de Polignac number, because 28440461469 - 2⁵ = 28440461437 is a prime.

It is a super-2 number, since 2×28440461469² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28440461479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4202544 + ... + 4209305.

It is an arithmetic number, because the mean of its divisors is an integer number (1917901800).

Almost surely, 2^28440461469 is an apocalyptic number.

It is an amenable number.

28440461469 is a deficient number, since it is larger than the sum of its proper divisors (17589181731).

28440461469 is a wasteful number, since it uses less digits than its factorization.

28440461469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8411889 (or 8411882 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 28440461469 in words is "twenty-eight billion, four hundred forty million, four hundred sixty-one thousand, four hundred sixty-nine".