29688980 has 12 divisors (see below), whose sum is σ = 62346900. Its totient is φ = 11875584.

The previous prime is 29688943. The next prime is 29688991. The reversal of 29688980 is 8988692.

It can be written as a sum of positive squares in 2 ways, for example, as 3104644 + 26584336 = 1762^2 + 5156^2 .

It is a congruent number.

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, 742205 + ... + 742244.

It is an arithmetic number, because the mean of its divisors is an integer number (5195575).

Almost surely, 2^29688980 is an apocalyptic number.

29688980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29688980 is an abundant number, since it is smaller than the sum of its proper divisors (32657920).

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

29688980 is a wasteful number, since it uses less digits than its factorization.

29688980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484458 (or 1484456 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 29688980 is about 5448.7594918477. The cubic root of 29688980 is about 309.6457277880.

The spelling of 29688980 in words is "twenty-nine million, six hundred eighty-eight thousand, nine hundred eighty".