29051220 has 48 divisors (see below), whose sum is σ = 88740288. Its totient is φ = 7042560.

The previous prime is 29051203. The next prime is 29051221. The reversal of 29051220 is 2215092.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29051221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21349 + ... + 22668.

It is an arithmetic number, because the mean of its divisors is an integer number (1848756).

Almost surely, 2^29051220 is an apocalyptic number.

29051220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29051220 is an abundant number, since it is smaller than the sum of its proper divisors (59689068).

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

29051220 is a wasteful number, since it uses less digits than its factorization.

29051220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44040 (or 44038 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 29051220 is about 5389.9183667288. The cubic root of 29051220 is about 307.4124544224.

The spelling of 29051220 in words is "twenty-nine million, fifty-one thousand, two hundred twenty".