29212972530 has 128 divisors (see below), whose sum is σ = 84952627200. Its totient is φ = 6280187904.

The previous prime is 29212972519. The next prime is 29212972531. The reversal of 29212972530 is 3527921292.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (29212972531) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 528274 + ... + 580946.

It is an arithmetic number, because the mean of its divisors is an integer number (663692400).

Almost surely, 2^29212972530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29212972530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42476313600).

29212972530 is an abundant number, since it is smaller than the sum of its proper divisors (55739654670).

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

29212972530 is a wasteful number, since it uses less digits than its factorization.

29212972530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52848.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 29212972530 in words is "twenty-nine billion, two hundred twelve million, nine hundred seventy-two thousand, five hundred thirty".