29913880 has 32 divisors (see below), whose sum is σ = 71267040. Its totient is φ = 11261440.

The previous prime is 29913839. The next prime is 29913901. The reversal of 29913880 is 8831992.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21316 + ... + 22675.

It is an arithmetic number, because the mean of its divisors is an integer number (2227095).

Almost surely, 2^29913880 is an apocalyptic number.

29913880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29913880 is an abundant number, since it is smaller than the sum of its proper divisors (41353160).

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

29913880 is a wasteful number, since it uses less digits than its factorization.

29913880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44019 (or 44015 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 29913880 is about 5469.3582804567. The cubic root of 29913880 is about 310.4256380053.

The spelling of 29913880 in words is "twenty-nine million, nine hundred thirteen thousand, eight hundred eighty".