29425326840 has 672 divisors, whose sum is σ = 122987682720. Its totient is φ = 6201142272.

The previous prime is 29425326829. The next prime is 29425326869. The reversal of 29425326840 is 4862352492.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 34495854 + ... + 34496706.

It is an arithmetic number, because the mean of its divisors is an integer number (183017385).

Almost surely, 2^29425326840 is an apocalyptic number.

29425326840 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 29425326840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61493841360).

29425326840 is an abundant number, since it is smaller than the sum of its proper divisors (93562355880).

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

29425326840 is a wasteful number, since it uses less digits than its factorization.

29425326840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 29425326840 in words is "twenty-nine billion, four hundred twenty-five million, three hundred twenty-six thousand, eight hundred forty".