28923679949476 has 81 divisors (see below), whose sum is σ = 55266105567393. Its totient is φ = 13239097204320.

The previous prime is 28923679949431. The next prime is 28923679949497. The reversal of 28923679949476 is 67494997632982.

The square root of 28923679949476 is 5378074.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4278650880100 + 24645029069376 = 2068490^2 + 4964376^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28923679949393 and 28923679949402.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 18317719255 + ... + 18317720833.

Almost surely, 2^{28923679949476} is an apocalyptic number.

28923679949476 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28923679949476 is the 5378074-th square number.

It is an amenable number.

28923679949476 is a deficient number, since it is larger than the sum of its proper divisors (26342425617917).

28923679949476 is an equidigital number, since it uses as much as digits as its factorization.

28923679949476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 1725 counting only the distinct ones).

The product of its digits is 17777055744, while the sum is 85.

The spelling of 28923679949476 in words is "twenty-eight trillion, nine hundred twenty-three billion, six hundred seventy-nine million, nine hundred forty-nine thousand, four hundred seventy-six".