69090240 has 112 divisors (see below), whose sum is σ = 222382080. Its totient is φ = 18170880.

The previous prime is 69090233. The next prime is 69090253. The reversal of 69090240 is 4209096.

It is a super-2 number, since 2×69090240² = 9546922526515200, which contains 22 as substring.

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 = 69090198 and 69090207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75385 + ... + 76295.

Almost surely, 2^69090240 is an apocalyptic number.

69090240 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 69090240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111191040).

69090240 is an abundant number, since it is smaller than the sum of its proper divisors (153291840).

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

69090240 is a wasteful number, since it uses less digits than its factorization.

69090240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1000 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 69090240 is about 8312.0538978041. The cubic root of 69090240 is about 410.3353195758.

The spelling of 69090240 in words is "sixty-nine million, ninety thousand, two hundred forty".