29878142 has 12 divisors (see below), whose sum is σ = 52134480. Its totient is φ = 12804876.

The previous prime is 29878139. The next prime is 29878151. The reversal of 29878142 is 24187892.

It is a self number, because there is not a number n which added to its sum of digits gives 29878142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152342 + ... + 152537.

It is an arithmetic number, because the mean of its divisors is an integer number (4344540).

Almost surely, 2^29878142 is an apocalyptic number.

29878142 is a deficient number, since it is larger than the sum of its proper divisors (22256338).

29878142 is a wasteful number, since it uses less digits than its factorization.

29878142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304895 (or 304888 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 29878142 is about 5466.0901931820. The cubic root of 29878142 is about 310.3019672949.

The spelling of 29878142 in words is "twenty-nine million, eight hundred seventy-eight thousand, one hundred forty-two".