29228388 has 24 divisors (see below), whose sum is σ = 77942592. Its totient is φ = 8350944.

The previous prime is 29228383. The next prime is 29228399. The reversal of 29228388 is 88382292.

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

It is not an unprimeable number, because it can be changed into a prime (29228383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173895 + ... + 174062.

It is an arithmetic number, because the mean of its divisors is an integer number (3247608).

Almost surely, 2^29228388 is an apocalyptic number.

29228388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

29228388 is an abundant number, since it is smaller than the sum of its proper divisors (48714204).

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

29228388 is a wasteful number, since it uses less digits than its factorization.

29228388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347971 (or 347969 counting only the distinct ones).

The product of its digits is 110592, while the sum is 42.

The square root of 29228388 is about 5406.3285138807. The cubic root of 29228388 is about 308.0361035994.

It can be divided in two parts, 292 and 28388, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 29228388 in words is "twenty-nine million, two hundred twenty-eight thousand, three hundred eighty-eight".