29378256856 has 16 divisors (see below), whose sum is σ = 59321480400. Its totient is φ = 13559195424.

The previous prime is 29378256829. The next prime is 29378256857. The reversal of 29378256856 is 65865287392.

It is a happy number.

It is a super-2 number, since 2×29378256856² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 29378256794 and 29378256803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29378256857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141241516 + ... + 141241723.

It is an arithmetic number, because the mean of its divisors is an integer number (3707592525).

Almost surely, 2^29378256856 is an apocalyptic number.

29378256856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

29378256856 is an abundant number, since it is smaller than the sum of its proper divisors (29943223544).

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

29378256856 is a wasteful number, since it uses less digits than its factorization.

29378256856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282483258 (or 282483254 counting only the distinct ones).

The product of its digits is 43545600, while the sum is 61.

The spelling of 29378256856 in words is "twenty-nine billion, three hundred seventy-eight million, two hundred fifty-six thousand, eight hundred fifty-six".