69434240 has 128 divisors (see below), whose sum is σ = 178459200. Its totient is φ = 25772032.

The previous prime is 69434221. The next prime is 69434291. The reversal of 69434240 is 4243496.

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

It is a super-2 number, since 2×69434240² = 9642227368755200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 69434197 and 69434206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 780116 + ... + 780204.

Almost surely, 2^69434240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89229600).

69434240 is an abundant number, since it is smaller than the sum of its proper divisors (109024960).

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

69434240 is a wasteful number, since it uses less digits than its factorization.

69434240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 69434240 is about 8332.7210441728. The cubic root of 69434240 is about 411.0152116762.

The spelling of 69434240 in words is "sixty-nine million, four hundred thirty-four thousand, two hundred forty".