29747097440 has 48 divisors (see below), whose sum is σ = 70403900112. Its totient is φ = 11877441024.

The previous prime is 29747097431. The next prime is 29747097473. The reversal of 29747097440 is 4479074792.

It is a super-2 number, since 2×29747097440² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77774 + ... + 256013.

It is an arithmetic number, because the mean of its divisors is an integer number (1466747919).

Almost surely, 2^29747097440 is an apocalyptic number.

29747097440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29747097440 is an abundant number, since it is smaller than the sum of its proper divisors (40656802672).

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

29747097440 is a wasteful number, since it uses less digits than its factorization.

29747097440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334359 (or 334351 counting only the distinct ones).

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 29747097440 in words is "twenty-nine billion, seven hundred forty-seven million, ninety-seven thousand, four hundred forty".