29950687920 has 80 divisors (see below), whose sum is σ = 93524951520. Its totient is φ = 7928543232.

The previous prime is 29950687909. The next prime is 29950687967. The reversal of 29950687920 is 2978605992.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 422575 + ... + 488334.

It is an arithmetic number, because the mean of its divisors is an integer number (1169061894).

Almost surely, 2^29950687920 is an apocalyptic number.

29950687920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29950687920 is an abundant number, since it is smaller than the sum of its proper divisors (63574263600).

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

29950687920 is a wasteful number, since it uses less digits than its factorization.

29950687920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911062 (or 911056 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 57.

The spelling of 29950687920 in words is "twenty-nine billion, nine hundred fifty million, six hundred eighty-seven thousand, nine hundred twenty".