28390174471 has 16 divisors (see below), whose sum is σ = 31650393600. Its totient is φ = 25307365248.

The previous prime is 28390174451. The next prime is 28390174493. The reversal of 28390174471 is 17447109382.

It is not a de Polignac number, because 28390174471 - 2⁷ = 28390174343 is a prime.

It is a super-3 number, since 3×28390174471³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28390174411) 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, 1618876 + ... + 1636318.

It is an arithmetic number, because the mean of its divisors is an integer number (1978149600).

Almost surely, 2^28390174471 is an apocalyptic number.

28390174471 is a deficient number, since it is larger than the sum of its proper divisors (3260219129).

28390174471 is a wasteful number, since it uses less digits than its factorization.

28390174471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22518.

The product of its (nonzero) digits is 338688, while the sum is 46.

The spelling of 28390174471 in words is "twenty-eight billion, three hundred ninety million, one hundred seventy-four thousand, four hundred seventy-one".