29212020 has 36 divisors (see below), whose sum is σ = 88610340. Its totient is φ = 7789824.

The previous prime is 29211997. The next prime is 29212031. The reversal of 29212020 is 2021292.

It can be written as a sum of positive squares in 2 ways, for example, as 8363664 + 20848356 = 2892^2 + 4566^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×29212020² = 1706684224960800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 29211984 and 29212002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80965 + ... + 81324.

Almost surely, 2^29212020 is an apocalyptic number.

29212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29212020 is an abundant number, since it is smaller than the sum of its proper divisors (59398320).

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

29212020 is a wasteful number, since it uses less digits than its factorization.

29212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162304 (or 162299 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 29212020 is about 5404.8145204068. The cubic root of 29212020 is about 307.9785924290.

The spelling of 29212020 in words is "twenty-nine million, two hundred twelve thousand, twenty".