29889870 has 16 divisors (see below), whose sum is σ = 71735760. Its totient is φ = 7970624.

The previous prime is 29889863. The next prime is 29889883. The reversal of 29889870 is 7898892.

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, 498135 + ... + 498194.

It is an arithmetic number, because the mean of its divisors is an integer number (4483485).

Almost surely, 2^29889870 is an apocalyptic number.

29889870 is an abundant number, since it is smaller than the sum of its proper divisors (41845890).

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

29889870 is a wasteful number, since it uses less digits than its factorization.

29889870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996339.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 29889870 is about 5467.1628839829. The cubic root of 29889870 is about 310.3425626953.

The spelling of 29889870 in words is "twenty-nine million, eight hundred eighty-nine thousand, eight hundred seventy".