29907428040 has 512 divisors, whose sum is σ = 121996800000. Its totient is φ = 6364624896.

The previous prime is 29907427999. The next prime is 29907428093. The reversal of 29907428040 is 4082470992.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8472996 + ... + 8476524.

It is an arithmetic number, because the mean of its divisors is an integer number (238275000).

Almost surely, 2^29907428040 is an apocalyptic number.

29907428040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29907428040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60998400000).

29907428040 is an abundant number, since it is smaller than the sum of its proper divisors (92089371960).

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

29907428040 is a wasteful number, since it uses less digits than its factorization.

29907428040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 29907428040 in words is "twenty-nine billion, nine hundred seven million, four hundred twenty-eight thousand, forty".