29814028978 has 4 divisors (see below), whose sum is σ = 44721043470. Its totient is φ = 14907014488.

The previous prime is 29814028943. The next prime is 29814029009. The reversal of 29814028978 is 87982041892.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15312330049 + 14501698929 = 123743^2 + 120423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7453507243 + ... + 7453507246.

Almost surely, 2^29814028978 is an apocalyptic number.

29814028978 is a deficient number, since it is larger than the sum of its proper divisors (14907014492).

29814028978 is a wasteful number, since it uses less digits than its factorization.

29814028978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14907014491.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The spelling of 29814028978 in words is "twenty-nine billion, eight hundred fourteen million, twenty-eight thousand, nine hundred seventy-eight".