29122920 has 48 divisors (see below), whose sum is σ = 94650660. Its totient is φ = 7766016.

The previous prime is 29122913. The next prime is 29122927. The reversal of 29122920 is 2922192.

It is an interprime number because it is at equal distance from previous prime (29122913) and next prime (29122927).

It can be written as a sum of positive squares in 2 ways, for example, as 28323684 + 799236 = 5322^2 + 894^2 .

It is not an unprimeable number, because it can be changed into a prime (29122927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40089 + ... + 40808.

Almost surely, 2^29122920 is an apocalyptic number.

29122920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29122920 is an abundant number, since it is smaller than the sum of its proper divisors (65527740).

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

29122920 is a wasteful number, since it uses less digits than its factorization.

29122920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80914 (or 80907 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 29122920 is about 5396.5655745113. The cubic root of 29122920 is about 307.6651502313.

It can be divided in two parts, 2912 and 2920, that added together give a cube (5832 = 18³).

The spelling of 29122920 in words is "twenty-nine million, one hundred twenty-two thousand, nine hundred twenty".