29878530 has 48 divisors (see below), whose sum is σ = 78829632. Its totient is φ = 7242400.

The previous prime is 29878529. The next prime is 29878531. The reversal of 29878530 is 3587892.

It is an interprime number because it is at equal distance from previous prime (29878529) and next prime (29878531).

It is not an unprimeable number, because it can be changed into a prime (29878531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 486 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (1642284).

Almost surely, 2^29878530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29878530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39414816).

29878530 is an abundant number, since it is smaller than the sum of its proper divisors (48951102).

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

29878530 is a wasteful number, since it uses less digits than its factorization.

29878530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8263 (or 8252 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 29878530 is about 5466.1256846143. The cubic root of 29878530 is about 310.3033104913.

The spelling of 29878530 in words is "twenty-nine million, eight hundred seventy-eight thousand, five hundred thirty".