1087626540 has 432 divisors, whose sum is σ = 4205779200. Its totient is φ = 207567360.

The previous prime is 1087626539. The next prime is 1087626541. The reversal of 1087626540 is 456267801.

It is an interprime number because it is at equal distance from previous prime (1087626539) and next prime (1087626541).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1087626541) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5465361 + ... + 5465559.

It is an arithmetic number, because the mean of its divisors is an integer number (9735600).

Almost surely, 2^1087626540 is an apocalyptic number.

1087626540 is a gapful number since it is divisible by the number (10) 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 1087626540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2102889600).

1087626540 is an abundant number, since it is smaller than the sum of its proper divisors (3118152660).

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

1087626540 is a wasteful number, since it uses less digits than its factorization.

1087626540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 1087626540 is about 32979.1834344030. The cubic root of 1087626540 is about 1028.3949425481.

The spelling of 1087626540 in words is "one billion, eighty-seven million, six hundred twenty-six thousand, five hundred forty".