29147879140 has 24 divisors (see below), whose sum is σ = 61898308920. Its totient is φ = 11528149248.

The previous prime is 29147879107. The next prime is 29147879141. The reversal of 29147879140 is 4197874192.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 721244736 + 28426634404 = 26856^2 + 168602^2 .

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (29147879141) 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, 8185827 + ... + 8189386.

It is an arithmetic number, because the mean of its divisors is an integer number (2579096205).

Almost surely, 2^29147879140 is an apocalyptic number.

29147879140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29147879140 is an abundant number, since it is smaller than the sum of its proper divisors (32750429780).

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

29147879140 is a wasteful number, since it uses less digits than its factorization.

29147879140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16375311 (or 16375309 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The spelling of 29147879140 in words is "twenty-nine billion, one hundred forty-seven million, eight hundred seventy-nine thousand, one hundred forty".