28996427397 has 8 divisors (see below), whose sum is σ = 44185032256. Its totient is φ = 16569387072.

The previous prime is 28996427363. The next prime is 28996427423. The reversal of 28996427397 is 79372469982.

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

It is not a de Polignac number, because 28996427397 - 2¹⁴ = 28996411013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28996427357) 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, 690391108 + ... + 690391149.

It is an arithmetic number, because the mean of its divisors is an integer number (5523129032).

Almost surely, 2^28996427397 is an apocalyptic number.

It is an amenable number.

28996427397 is a deficient number, since it is larger than the sum of its proper divisors (15188604859).

28996427397 is a wasteful number, since it uses less digits than its factorization.

28996427397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380782267.

The product of its digits is 82301184, while the sum is 66.

The spelling of 28996427397 in words is "twenty-eight billion, nine hundred ninety-six million, four hundred twenty-seven thousand, three hundred ninety-seven".