28399295379 has 64 divisors (see below), whose sum is σ = 51491026944. Its totient is φ = 13485643776.

The previous prime is 28399295341. The next prime is 28399295389. The reversal of 28399295379 is 97359299382.

28399295379 = T₁₆₂ + T₁₆₃ + ... + T₅₅₄₃.

It is not a de Polignac number, because 28399295379 - 2¹³ = 28399287187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28399295389) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26284 + ... + 239769.

It is an arithmetic number, because the mean of its divisors is an integer number (804547296).

Almost surely, 2^28399295379 is an apocalyptic number.

28399295379 is a deficient number, since it is larger than the sum of its proper divisors (23091731565).

28399295379 is a wasteful number, since it uses less digits than its factorization.

28399295379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266116.

The product of its digits is 66134880, while the sum is 66.

The spelling of 28399295379 in words is "twenty-eight billion, three hundred ninety-nine million, two hundred ninety-five thousand, three hundred seventy-nine".