29914123720 has 32 divisors (see below), whose sum is σ = 72484224120. Its totient is φ = 11045214720.

The previous prime is 29914123717. The next prime is 29914123721. The reversal of 29914123720 is 2732141992.

It can be written as a sum of positive squares in 4 ways, for example, as 13405471524 + 16508652196 = 115782^2 + 128486^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (29914123721) 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, 28763061 + ... + 28764100.

Almost surely, 2^29914123720 is an apocalyptic number.

29914123720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29914123720 is an abundant number, since it is smaller than the sum of its proper divisors (42570100400).

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

29914123720 is a wasteful number, since it uses less digits than its factorization.

29914123720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57527185 (or 57527181 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 29914123720 in words is "twenty-nine billion, nine hundred fourteen million, one hundred twenty-three thousand, seven hundred twenty".