29812080 has 80 divisors (see below), whose sum is σ = 95422464. Its totient is φ = 7691520.

The previous prime is 29812073. The next prime is 29812091. The reversal of 29812080 is 8021892.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×29812080² = 1777520227852800, which contains 22 as substring.

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

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 15 ways as a sum of consecutive naturals, for example, 5437 + ... + 9443.

Almost surely, 2^29812080 is an apocalyptic number.

29812080 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 29812080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47711232).

29812080 is an abundant number, since it is smaller than the sum of its proper divisors (65610384).

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

29812080 is a wasteful number, since it uses less digits than its factorization.

29812080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054 (or 4048 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 29812080 is about 5460.0439558670. The cubic root of 29812080 is about 310.0731010403.

The spelling of 29812080 in words is "twenty-nine million, eight hundred twelve thousand, eighty".