12290929540 has 24 divisors (see below), whose sum is σ = 25984186200. Its totient is φ = 4883374848.

The previous prime is 12290929531. The next prime is 12290929559. The reversal of 12290929540 is 4592909221.

It can be written as a sum of positive squares in 4 ways, for example, as 39538944 + 12251390596 = 6288^2 + 110686^2 .

It is a super-2 number, since 2×12290929540² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059257 + ... + 2065216.

It is an arithmetic number, because the mean of its divisors is an integer number (1082674425).

Almost surely, 2^12290929540 is an apocalyptic number.

12290929540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12290929540 is an abundant number, since it is smaller than the sum of its proper divisors (13693256660).

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

12290929540 is a wasteful number, since it uses less digits than its factorization.

12290929540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124631 (or 4124629 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 12290929540 in words is "twelve billion, two hundred ninety million, nine hundred twenty-nine thousand, five hundred forty".