29800531 has 4 divisors (see below), whose sum is σ = 31369000. Its totient is φ = 28232064.

The previous prime is 29800523. The next prime is 29800543. The reversal of 29800531 is 13500892.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 29800531 - 2³ = 29800523 is a prime.

It is a super-2 number, since 2×29800531² = 1776143295763922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 29800531.

It is not an unprimeable number, because it can be changed into a prime (29800501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784206 + ... + 784243.

It is an arithmetic number, because the mean of its divisors is an integer number (7842250).

Almost surely, 2^29800531 is an apocalyptic number.

29800531 is a deficient number, since it is larger than the sum of its proper divisors (1568469).

29800531 is a wasteful number, since it uses less digits than its factorization.

29800531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568468.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 29800531 is about 5458.9862612027. The cubic root of 29800531 is about 310.0330557883.

The spelling of 29800531 in words is "twenty-nine million, eight hundred thousand, five hundred thirty-one".