29397228 has 24 divisors (see below), whose sum is σ = 78392832. Its totient is φ = 8399184.

The previous prime is 29397227. The next prime is 29397229. The reversal of 29397228 is 82279392.

It is an interprime number because it is at equal distance from previous prime (29397227) and next prime (29397229).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 29397228.

It is not an unprimeable number, because it can be changed into a prime (29397223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174900 + ... + 175067.

It is an arithmetic number, because the mean of its divisors is an integer number (3266368).

Almost surely, 2^29397228 is an apocalyptic number.

29397228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29397228 is an abundant number, since it is smaller than the sum of its proper divisors (48995604).

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

29397228 is a wasteful number, since it uses less digits than its factorization.

29397228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349981 (or 349979 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 29397228 is about 5421.9210617640. The cubic root of 29397228 is about 308.6280964659.

The spelling of 29397228 in words is "twenty-nine million, three hundred ninety-seven thousand, two hundred twenty-eight".