69342840 has 144 divisors (see below), whose sum is σ = 262225080. Its totient is φ = 15845760.

The previous prime is 69342839. The next prime is 69342841. The reversal of 69342840 is 4824396.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (69342839) and next prime (69342841).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 69342795 and 69342804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69342841) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15675 + ... + 19605.

Almost surely, 2^69342840 is an apocalyptic number.

69342840 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 69342840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131112540).

69342840 is an abundant number, since it is smaller than the sum of its proper divisors (192882240).

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

69342840 is a wasteful number, since it uses less digits than its factorization.

69342840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962 (or 3948 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 69342840 is about 8327.2348351659. The cubic root of 69342840 is about 410.8347853902.

The spelling of 69342840 in words is "sixty-nine million, three hundred forty-two thousand, eight hundred forty".