69231240 has 128 divisors (see below), whose sum is σ = 248572800. Its totient is φ = 17038080.

The previous prime is 69231221. The next prime is 69231251. The reversal of 69231240 is 4213296.

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

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 31 ways as a sum of consecutive naturals, for example, 11575 + ... + 16505.

It is an arithmetic number, because the mean of its divisors is an integer number (1941975).

Almost surely, 2^69231240 is an apocalyptic number.

69231240 is a gapful number since it is divisible by the number (60) 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 69231240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124286400).

69231240 is an abundant number, since it is smaller than the sum of its proper divisors (179341560).

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

69231240 is a wasteful number, since it uses less digits than its factorization.

69231240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4964 (or 4954 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 69231240 is about 8320.5312330404. The cubic root of 69231240 is about 410.6142686047.

The spelling of 69231240 in words is "sixty-nine million, two hundred thirty-one thousand, two hundred forty".