29139570 has 48 divisors (see below), whose sum is σ = 76190400. Its totient is φ = 7726752.

The previous prime is 29139541. The next prime is 29139587. The reversal of 29139570 is 7593192.

It is a super-2 number, since 2×29139570² = 1698229079569800, which contains 22 as substring.

It is a Curzon 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 23 ways as a sum of consecutive naturals, for example, 17097 + ... + 18723.

It is an arithmetic number, because the mean of its divisors is an integer number (1587300).

Almost surely, 2^29139570 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29139570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38095200).

29139570 is an abundant number, since it is smaller than the sum of its proper divisors (47050830).

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

29139570 is a wasteful number, since it uses less digits than its factorization.

29139570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1839 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 29139570 is about 5398.1080018836. The cubic root of 29139570 is about 307.7237712857.

The spelling of 29139570 in words is "twenty-nine million, one hundred thirty-nine thousand, five hundred seventy".