1087979520 has 240 divisors, whose sum is σ = 3680389440. Its totient is φ = 273678336.

The previous prime is 1087979509. The next prime is 1087979537. The reversal of 1087979520 is 259797801.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1087979520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4669324 + ... + 4669556.

It is an arithmetic number, because the mean of its divisors is an integer number (15334956).

Almost surely, 2^1087979520 is an apocalyptic number.

1087979520 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 1087979520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1840194720).

1087979520 is an abundant number, since it is smaller than the sum of its proper divisors (2592409920).

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

1087979520 is an equidigital number, since it uses as much as digits as its factorization.

1087979520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 262 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 48.

The square root of 1087979520 is about 32984.5345578803. The cubic root of 1087979520 is about 1028.5061828102.

The spelling of 1087979520 in words is "one billion, eighty-seven million, nine hundred seventy-nine thousand, five hundred twenty".