29250720 has 240 divisors, whose sum is σ = 107758728. Its totient is φ = 7464960.

The previous prime is 29250691. The next prime is 29250731. The reversal of 29250720 is 2705292.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21566736 + 7683984 = 4644^2 + 2772^2 .

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 479490 + ... + 479550.

Almost surely, 2^29250720 is an apocalyptic number.

29250720 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 29250720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53879364).

29250720 is an abundant number, since it is smaller than the sum of its proper divisors (78508008).

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

29250720 is a wasteful number, since it uses less digits than its factorization.

29250720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 29250720 is about 5408.3934768099. The cubic root of 29250720 is about 308.1145354652.

The spelling of 29250720 in words is "twenty-nine million, two hundred fifty thousand, seven hundred twenty".