29992540 has 12 divisors (see below), whose sum is σ = 62984376. Its totient is φ = 11997008.

The previous prime is 29992537. The next prime is 29992597. The reversal of 29992540 is 4529992.

It is a junction number, because it is equal to n+sod(n) for n = 29992493 and 29992502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749794 + ... + 749833.

It is an arithmetic number, because the mean of its divisors is an integer number (5248698).

Almost surely, 2^29992540 is an apocalyptic number.

29992540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29992540 is an abundant number, since it is smaller than the sum of its proper divisors (32991836).

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

29992540 is a wasteful number, since it uses less digits than its factorization.

29992540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1499636 (or 1499634 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 29992540 is about 5476.5445309976. The cubic root of 29992540 is about 310.6974929553.

The spelling of 29992540 in words is "twenty-nine million, nine hundred ninety-two thousand, five hundred forty".