474528781 has 4 divisors (see below), whose sum is σ = 499504000. Its totient is φ = 449553564.

The previous prime is 474528757. The next prime is 474528829. The reversal of 474528781 is 187825474.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 187825474 = 2 ⋅93912737.

It is a cyclic number.

It is not a de Polignac number, because 474528781 - 2⁹ = 474528269 is a prime.

It is a super-2 number, since 2×474528781² = 450355127994691922, which contains 22 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 (474528731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12487581 + ... + 12487618.

It is an arithmetic number, because the mean of its divisors is an integer number (124876000).

Almost surely, 2^474528781 is an apocalyptic number.

It is an amenable number.

474528781 is a deficient number, since it is larger than the sum of its proper divisors (24975219).

474528781 is a wasteful number, since it uses less digits than its factorization.

474528781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24975218.

The product of its digits is 501760, while the sum is 46.

The square root of 474528781 is about 21783.6815299894. The cubic root of 474528781 is about 779.9872784469.

The spelling of 474528781 in words is "four hundred seventy-four million, five hundred twenty-eight thousand, seven hundred eighty-one".