26929827840 has 832 divisors, whose sum is σ = 101909145600. Its totient is φ = 6020923392.

The previous prime is 26929827791. The next prime is 26929827887. The reversal of 26929827840 is 4872892962.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 456437731 + ... + 456437789.

Almost surely, 2^26929827840 is an apocalyptic number.

26929827840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26929827840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50954572800).

26929827840 is an abundant number, since it is smaller than the sum of its proper divisors (74979317760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26929827840 is a wasteful number, since it uses less digits than its factorization.

26929827840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 26929827840 in words is "twenty-six billion, nine hundred twenty-nine million, eight hundred twenty-seven thousand, eight hundred forty".