29107920 has 40 divisors (see below), whose sum is σ = 90235296. Its totient is φ = 7762048.

The previous prime is 29107913. The next prime is 29107921. The reversal of 29107920 is 2970192.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29107921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60402 + ... + 60881.

Almost surely, 2^29107920 is an apocalyptic number.

29107920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29107920 is an abundant number, since it is smaller than the sum of its proper divisors (61127376).

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

29107920 is a wasteful number, since it uses less digits than its factorization.

29107920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121299 (or 121293 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 29107920 is about 5395.1756227207. The cubic root of 29107920 is about 307.6123193361.

The spelling of 29107920 in words is "twenty-nine million, one hundred seven thousand, nine hundred twenty".