29506923840 has 56 divisors (see below), whose sum is σ = 93684486240. Its totient is φ = 7868512768.

The previous prime is 29506923839. The next prime is 29506923847. The reversal of 29506923840 is 4832960592.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 29506923840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29506923847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15367230 + ... + 15369149.

Almost surely, 2^29506923840 is an apocalyptic number.

29506923840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29506923840 is an abundant number, since it is smaller than the sum of its proper divisors (64177562400).

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

29506923840 is a wasteful number, since it uses less digits than its factorization.

29506923840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30736399 (or 30736389 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 29506923840 in words is "twenty-nine billion, five hundred six million, nine hundred twenty-three thousand, eight hundred forty".