28394461403 has 16 divisors (see below), whose sum is σ = 37264093440. Its totient is φ = 20961050400.

The previous prime is 28394461343. The next prime is 28394461421. The reversal of 28394461403 is 30416449382.

It is a cyclic number.

It is not a de Polignac number, because 28394461403 - 2⁶ = 28394461339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28394461453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9702728 + ... + 9705653.

It is an arithmetic number, because the mean of its divisors is an integer number (2329005840).

Almost surely, 2^28394461403 is an apocalyptic number.

28394461403 is a deficient number, since it is larger than the sum of its proper divisors (8869632037).

28394461403 is a wasteful number, since it uses less digits than its factorization.

28394461403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19408418.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 28394461403 in words is "twenty-eight billion, three hundred ninety-four million, four hundred sixty-one thousand, four hundred three".