69216240 has 160 divisors (see below), whose sum is σ = 231770880. Its totient is φ = 17031168.

The previous prime is 69216239. The next prime is 69216253. The reversal of 69216240 is 4261296.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 69216198 and 69216207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195904 + ... + 196256.

It is an arithmetic number, because the mean of its divisors is an integer number (1448568).

Almost surely, 2^69216240 is an apocalyptic number.

69216240 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 69216240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115885440).

69216240 is an abundant number, since it is smaller than the sum of its proper divisors (162554640).

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

69216240 is a wasteful number, since it uses less digits than its factorization.

69216240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 69216240 is about 8319.6297994562. The cubic root of 69216240 is about 410.5846111894.

The spelling of 69216240 in words is "sixty-nine million, two hundred sixteen thousand, two hundred forty".