29228029440 has 80 divisors (see below), whose sum is σ = 93438381168. Its totient is φ = 7794139136.

The previous prime is 29228029423. The next prime is 29228029451. The reversal of 29228029440 is 4492082292.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 29228029392 and 29228029401.

It is a congruent number.

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, 1895187 + ... + 1910546.

Almost surely, 2^29228029440 is an apocalyptic number.

29228029440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29228029440 is an abundant number, since it is smaller than the sum of its proper divisors (64210351728).

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

29228029440 is an equidigital number, since it uses as much as digits as its factorization.

29228029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805759 (or 3805743 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 29228029440 in words is "twenty-nine billion, two hundred twenty-eight million, twenty-nine thousand, four hundred forty".