29138380 has 12 divisors (see below), whose sum is σ = 61190640. Its totient is φ = 11655344.

The previous prime is 29138377. The next prime is 29138383. The reversal of 29138380 is 8383192.

It is an interprime number because it is at equal distance from previous prime (29138377) and next prime (29138383).

It is not an unprimeable number, because it can be changed into a prime (29138383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728440 + ... + 728479.

It is an arithmetic number, because the mean of its divisors is an integer number (5099220).

Almost surely, 2^29138380 is an apocalyptic number.

29138380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29138380 is an abundant number, since it is smaller than the sum of its proper divisors (32052260).

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

29138380 is a wasteful number, since it uses less digits than its factorization.

29138380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456928 (or 1456926 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 29138380 is about 5397.9977769540. The cubic root of 29138380 is about 307.7195822938.

The spelling of 29138380 in words is "twenty-nine million, one hundred thirty-eight thousand, three hundred eighty".