29928649980 has 48 divisors (see below), whose sum is σ = 84355213824. Its totient is φ = 7928116800.

The previous prime is 29928649979. The next prime is 29928649997. The reversal of 29928649980 is 8994682992.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1642632 + ... + 1660751.

It is an arithmetic number, because the mean of its divisors is an integer number (1757400288).

Almost surely, 2^29928649980 is an apocalyptic number.

29928649980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29928649980 is an abundant number, since it is smaller than the sum of its proper divisors (54426563844).

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

29928649980 is a wasteful number, since it uses less digits than its factorization.

29928649980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303546 (or 3303544 counting only the distinct ones).

The product of its (nonzero) digits is 40310784, while the sum is 66.

The spelling of 29928649980 in words is "twenty-nine billion, nine hundred twenty-eight million, six hundred forty-nine thousand, nine hundred eighty".