69724480 has 112 divisors (see below), whose sum is σ = 201021696. Its totient is φ = 22487040.

The previous prime is 69724451. The next prime is 69724481. The reversal of 69724480 is 8442796.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×69724480² = 9723006222540800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69724481) by changing a digit.

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, 37165 + ... + 38995.

Almost surely, 2^69724480 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 69724480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100510848).

69724480 is an abundant number, since it is smaller than the sum of its proper divisors (131297216).

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

69724480 is a wasteful number, since it uses less digits than its factorization.

69724480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872 (or 1862 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 69724480 is about 8350.1185620325. The cubic root of 69724480 is about 411.5871063792.

The spelling of 69724480 in words is "sixty-nine million, seven hundred twenty-four thousand, four hundred eighty".