29398140 has 144 divisors (see below), whose sum is σ = 96864768. Its totient is φ = 7470144.

The previous prime is 29398139. The next prime is 29398153. The reversal of 29398140 is 4189392.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 29398095 and 29398104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111649 + ... + 111911.

It is an arithmetic number, because the mean of its divisors is an integer number (672672).

Almost surely, 2^29398140 is an apocalyptic number.

29398140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 29398140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48432384).

29398140 is an abundant number, since it is smaller than the sum of its proper divisors (67466628).

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

29398140 is a wasteful number, since it uses less digits than its factorization.

29398140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 29398140 is about 5422.0051641436. The cubic root of 29398140 is about 308.6312879904.

The spelling of 29398140 in words is "twenty-nine million, three hundred ninety-eight thousand, one hundred forty".