29220520 has 64 divisors (see below), whose sum is σ = 76147200. Its totient is φ = 9884160.

The previous prime is 29220493. The next prime is 29220551. The reversal of 29220520 is 2502292.

It is a junction number, because it is equal to n+sod(n) for n = 29220491 and 29220500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21460 + ... + 22780.

It is an arithmetic number, because the mean of its divisors is an integer number (1189800).

Almost surely, 2^29220520 is an apocalyptic number.

29220520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29220520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38073600).

29220520 is an abundant number, since it is smaller than the sum of its proper divisors (46926680).

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

29220520 is a wasteful number, since it uses less digits than its factorization.

29220520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418 (or 1414 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 29220520 is about 5405.6007991712. The cubic root of 29220520 is about 308.0084610033.

The spelling of 29220520 in words is "twenty-nine million, two hundred twenty thousand, five hundred twenty".