29801992 has 16 divisors (see below), whose sum is σ = 60958800. Its totient is φ = 13546320.

The previous prime is 29801971. The next prime is 29802011. The reversal of 29801992 is 29910892.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169242 + ... + 169417.

It is an arithmetic number, because the mean of its divisors is an integer number (3809925).

Almost surely, 2^29801992 is an apocalyptic number.

29801992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

29801992 is an abundant number, since it is smaller than the sum of its proper divisors (31156808).

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

29801992 is a wasteful number, since it uses less digits than its factorization.

29801992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338676 (or 338672 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 29801992 is about 5459.1200756166. The cubic root of 29801992 is about 310.0381222628.

Subtracting 29801992 from its reverse (29910892), we obtain a square (108900 = 330²).

The spelling of 29801992 in words is "twenty-nine million, eight hundred one thousand, nine hundred ninety-two".