29451632028 has 72 divisors (see below), whose sum is σ = 85043806848. Its totient is φ = 7767459648.

The previous prime is 29451632011. The next prime is 29451632033. The reversal of 29451632028 is 82023615492.

It is a super-2 number, since 2×29451632028² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (42) 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 (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1023126 + ... + 1051517.

It is an arithmetic number, because the mean of its divisors is an integer number (1181163984).

Almost surely, 2^29451632028 is an apocalyptic number.

29451632028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29451632028 is an abundant number, since it is smaller than the sum of its proper divisors (55592174820).

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

29451632028 is a wasteful number, since it uses less digits than its factorization.

29451632028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074683 (or 2074668 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 29451632028 in words is "twenty-nine billion, four hundred fifty-one million, six hundred thirty-two thousand, twenty-eight".