28409137774 has 8 divisors (see below), whose sum is σ = 42619091400. Its totient is φ = 14202773976.

The previous prime is 28409137739. The next prime is 28409137811. The reversal of 28409137774 is 47773190482.

It is a happy number.

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

It is a super-2 number, since 2×28409137774² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877584 + ... + 909379.

It is an arithmetic number, because the mean of its divisors is an integer number (5327386425).

Almost surely, 2^28409137774 is an apocalyptic number.

28409137774 is a deficient number, since it is larger than the sum of its proper divisors (14209953626).

28409137774 is a wasteful number, since it uses less digits than its factorization.

28409137774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794914.

The product of its (nonzero) digits is 2370816, while the sum is 52.

The spelling of 28409137774 in words is "twenty-eight billion, four hundred nine million, one hundred thirty-seven thousand, seven hundred seventy-four".