29139000 has 128 divisors (see below), whose sum is σ = 99290880. Its totient is φ = 7056000.

The previous prime is 29138983. The next prime is 29139031. The reversal of 29139000 is 93192.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 32559 + ... + 33441.

It is an arithmetic number, because the mean of its divisors is an integer number (775710).

Almost surely, 2^29139000 is an apocalyptic number.

29139000 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 29139000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49645440).

29139000 is an abundant number, since it is smaller than the sum of its proper divisors (70151880).

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

29139000 is a wasteful number, since it uses less digits than its factorization.

29139000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918 (or 904 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 29139000 is about 5398.0552053494. The cubic root of 29139000 is about 307.7217648080.

The spelling of 29139000 in words is "twenty-nine million, one hundred thirty-nine thousand".