28408380026 has 16 divisors (see below), whose sum is σ = 48589899624. Its totient is φ = 12340291584.

The previous prime is 28408380023. The next prime is 28408380029. The reversal of 28408380026 is 62008380482.

It is an interprime number because it is at equal distance from previous prime (28408380023) and next prime (28408380029).

It can be written as a sum of positive squares in 4 ways, for example, as 28341385801 + 66994225 = 168349^2 + 8185^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28408380023) 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, 32135735 + ... + 32136618.

Almost surely, 2^28408380026 is an apocalyptic number.

28408380026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28408380026 is a deficient number, since it is larger than the sum of its proper divisors (20181519598).

28408380026 is a wasteful number, since it uses less digits than its factorization.

28408380026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64272385.

The product of its (nonzero) digits is 147456, while the sum is 41.

The spelling of 28408380026 in words is "twenty-eight billion, four hundred eight million, three hundred eighty thousand, twenty-six".