28470781437 has 8 divisors (see below), whose sum is σ = 43384047936. Its totient is φ = 16269017952.

The previous prime is 28470781411. The next prime is 28470781457. The reversal of 28470781437 is 73418707482.

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

It is not a de Polignac number, because 28470781437 - 2⁶ = 28470781373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28470781437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28470781457) 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, 677875728 + ... + 677875769.

It is an arithmetic number, because the mean of its divisors is an integer number (5423005992).

Almost surely, 2^28470781437 is an apocalyptic number.

It is an amenable number.

28470781437 is a deficient number, since it is larger than the sum of its proper divisors (14913266499).

28470781437 is a wasteful number, since it uses less digits than its factorization.

28470781437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355751507.

The product of its (nonzero) digits is 2107392, while the sum is 51.

The spelling of 28470781437 in words is "twenty-eight billion, four hundred seventy million, seven hundred eighty-one thousand, four hundred thirty-seven".