29990146 has 8 divisors (see below), whose sum is σ = 45016524. Its totient is φ = 14984640.

The previous prime is 29990131. The next prime is 29990167. The reversal of 29990146 is 64109992.

It can be written as a sum of positive squares in 2 ways, for example, as 24750625 + 5239521 = 4975^2 + 2289^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 29990099 and 29990108.

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 3 ways as a sum of consecutive naturals, for example, 915 + ... + 7798.

Almost surely, 2^29990146 is an apocalyptic number.

29990146 is a deficient number, since it is larger than the sum of its proper divisors (15026378).

29990146 is a wasteful number, since it uses less digits than its factorization.

29990146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 29990146 is about 5476.3259581584. The cubic root of 29990146 is about 310.6892261264.

The spelling of 29990146 in words is "twenty-nine million, nine hundred ninety thousand, one hundred forty-six".