29897549380 has 12 divisors (see below), whose sum is σ = 62784853740. Its totient is φ = 11959019744.

The previous prime is 29897549371. The next prime is 29897549393. The reversal of 29897549380 is 8394579892.

It can be written as a sum of positive squares in 2 ways, for example, as 13488964164 + 16408585216 = 116142^2 + 128096^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747438715 + ... + 747438754.

It is an arithmetic number, because the mean of its divisors is an integer number (5232071145).

Almost surely, 2^29897549380 is an apocalyptic number.

29897549380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29897549380 is an abundant number, since it is smaller than the sum of its proper divisors (32887304360).

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

29897549380 is a wasteful number, since it uses less digits than its factorization.

29897549380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494877478 (or 1494877476 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 29897549380 in words is "twenty-nine billion, eight hundred ninety-seven million, five hundred forty-nine thousand, three hundred eighty".