29118020 has 12 divisors (see below), whose sum is σ = 61147884. Its totient is φ = 11647200.

The previous prime is 29118007. The next prime is 29118043. The reversal of 29118020 is 2081192.

It can be written as a sum of positive squares in 2 ways, for example, as 8031556 + 21086464 = 2834^2 + 4592^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727931 + ... + 727970.

It is an arithmetic number, because the mean of its divisors is an integer number (5095657).

Almost surely, 2^29118020 is an apocalyptic number.

29118020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29118020 is an abundant number, since it is smaller than the sum of its proper divisors (32029864).

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

29118020 is a wasteful number, since it uses less digits than its factorization.

29118020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455910 (or 1455908 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 29118020 is about 5396.1115629683. Note that the first 3 decimals coincide. The cubic root of 29118020 is about 307.6478941343.

The spelling of 29118020 in words is "twenty-nine million, one hundred eighteen thousand, twenty".