28407408267 has 64 divisors (see below), whose sum is σ = 45331779584. Its totient is φ = 15486059520.

The previous prime is 28407408259. The next prime is 28407408277. The reversal of 28407408267 is 76280470482.

It is a happy number.

It is not a de Polignac number, because 28407408267 - 2³ = 28407408259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28407408257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10265118 + ... + 10267884.

It is an arithmetic number, because the mean of its divisors is an integer number (708309056).

Almost surely, 2^28407408267 is an apocalyptic number.

28407408267 is a deficient number, since it is larger than the sum of its proper divisors (16924371317).

28407408267 is a wasteful number, since it uses less digits than its factorization.

28407408267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 28407408267 in words is "twenty-eight billion, four hundred seven million, four hundred eight thousand, two hundred sixty-seven".