29106820 has 12 divisors (see below), whose sum is σ = 61124364. Its totient is φ = 11642720.

The previous prime is 29106811. The next prime is 29106853. The reversal of 29106820 is 2860192.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16842816 + 12264004 = 4104^2 + 3502^2 .

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, 727651 + ... + 727690.

It is an arithmetic number, because the mean of its divisors is an integer number (5093697).

Almost surely, 2^29106820 is an apocalyptic number.

29106820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29106820 is an abundant number, since it is smaller than the sum of its proper divisors (32017544).

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

29106820 is a wasteful number, since it uses less digits than its factorization.

29106820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455350 (or 1455348 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 29106820 is about 5395.0736788296. The cubic root of 29106820 is about 307.6084443562.

It can be divided in two parts, 2910 and 6820, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 29106820 in words is "twenty-nine million, one hundred six thousand, eight hundred twenty".