29223739840 has 56 divisors (see below), whose sum is σ = 73682516592. Its totient is φ = 11001876480.

The previous prime is 29223739837. The next prime is 29223739841. The reversal of 29223739840 is 4893732292.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29223739841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680566 + ... + 2691445.

Almost surely, 2^29223739840 is an apocalyptic number.

29223739840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29223739840 is an abundant number, since it is smaller than the sum of its proper divisors (44458776752).

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

29223739840 is a wasteful number, since it uses less digits than its factorization.

29223739840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372045 (or 5372035 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 49.

The spelling of 29223739840 in words is "twenty-nine billion, two hundred twenty-three million, seven hundred thirty-nine thousand, eight hundred forty".