29961690 has 32 divisors (see below), whose sum is σ = 78446016. Its totient is φ = 7263360.

The previous prime is 29961683. The next prime is 29961719. The reversal of 29961690 is 9616992.

It is a happy number.

It is a super-2 number, since 2×29961690² = 1795405735312200, which contains 22 as substring.

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, 45067 + ... + 45726.

It is an arithmetic number, because the mean of its divisors is an integer number (2451438).

Almost surely, 2^29961690 is an apocalyptic number.

29961690 is an abundant number, since it is smaller than the sum of its proper divisors (48484326).

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

29961690 is a wasteful number, since it uses less digits than its factorization.

29961690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90814.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 29961690 is about 5473.7272493247. The cubic root of 29961690 is about 310.5909297245.

The spelling of 29961690 in words is "twenty-nine million, nine hundred sixty-one thousand, six hundred ninety".