29874820 has 12 divisors (see below), whose sum is σ = 62737164. Its totient is φ = 11949920.

The previous prime is 29874791. The next prime is 29874833. The reversal of 29874820 is 2847892.

It can be written as a sum of positive squares in 2 ways, for example, as 15872256 + 14002564 = 3984^2 + 3742^2 .

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, 746851 + ... + 746890.

It is an arithmetic number, because the mean of its divisors is an integer number (5228097).

Almost surely, 2^29874820 is an apocalyptic number.

29874820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29874820 is an abundant number, since it is smaller than the sum of its proper divisors (32862344).

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

29874820 is a wasteful number, since it uses less digits than its factorization.

29874820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493750 (or 1493748 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 29874820 is about 5465.7863112273. The cubic root of 29874820 is about 310.2904665648.

The spelling of 29874820 in words is "twenty-nine million, eight hundred seventy-four thousand, eight hundred twenty".