29961988 has 24 divisors (see below), whose sum is σ = 61992000. Its totient is φ = 12397728.

The previous prime is 29961961. The next prime is 29961991. The reversal of 29961988 is 88916992.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17638 + ... + 19261.

It is an arithmetic number, because the mean of its divisors is an integer number (2583000).

Almost surely, 2^29961988 is an apocalyptic number.

29961988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29961988 is an abundant number, since it is smaller than the sum of its proper divisors (32030012).

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

29961988 is a wasteful number, since it uses less digits than its factorization.

29961988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36939 (or 36937 counting only the distinct ones).

The product of its digits is 559872, while the sum is 52.

The square root of 29961988 is about 5473.7544701969. The cubic root of 29961988 is about 310.5919594371.

The spelling of 29961988 in words is "twenty-nine million, nine hundred sixty-one thousand, nine hundred eighty-eight".