28860242741929 has 3 divisors (see below), whose sum is σ = 28860248114103. Its totient is φ = 28860237369756.

The previous prime is 28860242741899. The next prime is 28860242742113. The reversal of 28860242741929 is 92914724206882.

The square root of 28860242741929 is 5372173.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7866874992025 + 20993367749904 = 2804795^2 + 4581852^2 .

It is not a de Polignac number, because 28860242741929 - 2¹³ = 28860242733737 is a prime.

It is a super-2 number, since 2×28860242741929² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28860242741329) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2686087 + ... + 8058259.

It is an arithmetic number, because the mean of its divisors is an integer number (9620082704701).

Almost surely, 2^{28860242741929} is an apocalyptic number.

28860242741929 is the 5372173-rd square number.

28860242741929 is the 2686087-th centered octagonal number.

It is an amenable number.

28860242741929 is a deficient number, since it is larger than the sum of its proper divisors (5372174).

28860242741929 is an frugal number, since it uses more digits than its factorization.

28860242741929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744346 (or 5372173 counting only the distinct ones).

The product of its (nonzero) digits is 55738368, while the sum is 64.

The spelling of 28860242741929 in words is "twenty-eight trillion, eight hundred sixty billion, two hundred forty-two million, seven hundred forty-one thousand, nine hundred twenty-nine".