29678254431 has 16 divisors (see below), whose sum is σ = 45383817984. Its totient is φ = 16899073344.

The previous prime is 29678254423. The next prime is 29678254433. The reversal of 29678254431 is 13445287692.

It is not a de Polignac number, because 29678254431 - 2³ = 29678254423 is a prime.

It is a super-2 number, since 2×29678254431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29678254433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2490966 + ... + 2502851.

It is an arithmetic number, because the mean of its divisors is an integer number (2836488624).

Almost surely, 2^29678254431 is an apocalyptic number.

29678254431 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

29678254431 is a deficient number, since it is larger than the sum of its proper divisors (15705563553).

29678254431 is a wasteful number, since it uses less digits than its factorization.

29678254431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994110.

The product of its digits is 2903040, while the sum is 51.

The spelling of 29678254431 in words is "twenty-nine billion, six hundred seventy-eight million, two hundred fifty-four thousand, four hundred thirty-one".