29425840 has 20 divisors (see below), whose sum is σ = 68415264. Its totient is φ = 11770304.

The previous prime is 29425831. The next prime is 29425853. The reversal of 29425840 is 4852492.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 29425796 and 29425805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183832 + ... + 183991.

Almost surely, 2^29425840 is an apocalyptic number.

29425840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29425840 is an abundant number, since it is smaller than the sum of its proper divisors (38989424).

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

29425840 is a wasteful number, since it uses less digits than its factorization.

29425840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367836 (or 367830 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 29425840 is about 5424.5589682480. The cubic root of 29425840 is about 308.7281921142.

The spelling of 29425840 in words is "twenty-nine million, four hundred twenty-five thousand, eight hundred forty".