29172890880 has 1152 divisors, whose sum is σ = 127153152000. Its totient is φ = 6318563328.

The previous prime is 29172890867. The next prime is 29172890911. The reversal of 29172890880 is 8809827192.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 272643787 + ... + 272643893.

It is an arithmetic number, because the mean of its divisors is an integer number (110376000).

Almost surely, 2^29172890880 is an apocalyptic number.

29172890880 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 29172890880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63576576000).

29172890880 is an abundant number, since it is smaller than the sum of its proper divisors (97980261120).

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

29172890880 is a wasteful number, since it uses less digits than its factorization.

29172890880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The spelling of 29172890880 in words is "twenty-nine billion, one hundred seventy-two million, eight hundred ninety thousand, eight hundred eighty".