29220940 has 24 divisors (see below), whose sum is σ = 70130592. Its totient is φ = 10018560.

The previous prime is 29220937. The next prime is 29221019. The reversal of 29220940 is 4902292.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 29220899 and 29220908.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 104221 + ... + 104500.

It is an arithmetic number, because the mean of its divisors is an integer number (2922108).

Almost surely, 2^29220940 is an apocalyptic number.

29220940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29220940 is an abundant number, since it is smaller than the sum of its proper divisors (40909652).

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

29220940 is a wasteful number, since it uses less digits than its factorization.

29220940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208737 (or 208735 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 29220940 is about 5405.6396476273. The cubic root of 29220940 is about 308.0099367121.

The spelling of 29220940 in words is "twenty-nine million, two hundred twenty thousand, nine hundred forty".