29970840 has 64 divisors (see below), whose sum is σ = 93830400. Its totient is φ = 7644032.

The previous prime is 29970827. The next prime is 29970887. The reversal of 29970840 is 4807992.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2670 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (1466100).

Almost surely, 2^29970840 is an apocalyptic number.

29970840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29970840 is an abundant number, since it is smaller than the sum of its proper divisors (63859560).

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

29970840 is a wasteful number, since it uses less digits than its factorization.

29970840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10896 (or 10892 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 29970840 is about 5474.5629962582. The cubic root of 29970840 is about 310.6225436261.

The spelling of 29970840 in words is "twenty-nine million, nine hundred seventy thousand, eight hundred forty".