29972394 has 48 divisors (see below), whose sum is σ = 70466760. Its totient is φ = 9169920.

The previous prime is 29972389. The next prime is 29972477. The reversal of 29972394 is 49327992.

It can be written as a sum of positive squares in 4 ways, for example, as 18378369 + 11594025 = 4287^2 + 3405^2 .

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, 11352 + ... + 13740.

Almost surely, 2^29972394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29972394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35233380).

29972394 is an abundant number, since it is smaller than the sum of its proper divisors (40494366).

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

29972394 is a wasteful number, since it uses less digits than its factorization.

29972394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455 (or 2452 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 29972394 is about 5474.7049235552. The cubic root of 29972394 is about 310.6279121675.

The spelling of 29972394 in words is "twenty-nine million, nine hundred seventy-two thousand, three hundred ninety-four".