29685990 has 16 divisors (see below), whose sum is σ = 71246448. Its totient is φ = 7916256.

The previous prime is 29685967. The next prime is 29686001. The reversal of 29685990 is 9958692.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494737 + ... + 494796.

It is an arithmetic number, because the mean of its divisors is an integer number (4452903).

Almost surely, 2^29685990 is an apocalyptic number.

29685990 is an abundant number, since it is smaller than the sum of its proper divisors (41560458).

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

29685990 is a wasteful number, since it uses less digits than its factorization.

29685990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989543.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 29685990 is about 5448.4851105605. The cubic root of 29685990 is about 309.6353325526.

The spelling of 29685990 in words is "twenty-nine million, six hundred eighty-five thousand, nine hundred ninety".