2258697240 has 192 divisors, whose sum is σ = 7472424960. Its totient is φ = 591632640.

The previous prime is 2258697191. The next prime is 2258697251. The reversal of 2258697240 is 427968522.

2258697240 is a `hidden beast` number, since 22 + 586 + 9 + 7 + 2 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7357167 + ... + 7357473.

It is an arithmetic number, because the mean of its divisors is an integer number (38918880).

Almost surely, 2^2258697240 is an apocalyptic number.

2258697240 is a gapful number since it is divisible by the number (20) 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 2258697240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3736212480).

2258697240 is an abundant number, since it is smaller than the sum of its proper divisors (5213727720).

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

2258697240 is a wasteful number, since it uses less digits than its factorization.

2258697240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 615 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2258697240 is about 47525.7534395826. The cubic root of 2258697240 is about 1312.0569127478.

The spelling of 2258697240 in words is "two billion, two hundred fifty-eight million, six hundred ninety-seven thousand, two hundred forty".