29223040 has 128 divisors (see below), whose sum is σ = 87246720. Its totient is φ = 9093120.

The previous prime is 29223031. The next prime is 29223071. The reversal of 29223040 is 4032292.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48984 + ... + 49576.

It is an arithmetic number, because the mean of its divisors is an integer number (681615).

Almost surely, 2^29223040 is an apocalyptic number.

29223040 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 29223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43623360).

29223040 is an abundant number, since it is smaller than the sum of its proper divisors (58023680).

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

29223040 is a wasteful number, since it uses less digits than its factorization.

29223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 29223040 is about 5405.8338857201. The cubic root of 29223040 is about 308.0173150439.

It can be divided in two parts, 292 and 23040, that added together give a palindrome (23332).

The spelling of 29223040 in words is "twenty-nine million, two hundred twenty-three thousand, forty".