29427820 has 24 divisors (see below), whose sum is σ = 62370000. Its totient is φ = 11662272.

The previous prime is 29427809. The next prime is 29427841. The reversal of 29427820 is 2872492.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4570 + ... + 8929.

It is an arithmetic number, because the mean of its divisors is an integer number (2598750).

Almost surely, 2^29427820 is an apocalyptic number.

29427820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29427820 is an abundant number, since it is smaller than the sum of its proper divisors (32942180).

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

29427820 is a wasteful number, since it uses less digits than its factorization.

29427820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13617 (or 13615 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 29427820 is about 5424.7414684941. The cubic root of 29427820 is about 308.7351165057.

The spelling of 29427820 in words is "twenty-nine million, four hundred twenty-seven thousand, eight hundred twenty".