1087162020 has 288 divisors, whose sum is σ = 3973656960. Its totient is φ = 246032640.

The previous prime is 1087162003. The next prime is 1087162031. The reversal of 1087162020 is 202617801.

1087162020 is a `hidden beast` number, since 10 + 8 + 7 + 1 + 620 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4789147 + ... + 4789373.

It is an arithmetic number, because the mean of its divisors is an integer number (13797420).

Almost surely, 2^1087162020 is an apocalyptic number.

1087162020 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 1087162020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1986828480).

1087162020 is an abundant number, since it is smaller than the sum of its proper divisors (2886494940).

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

1087162020 is a wasteful number, since it uses less digits than its factorization.

1087162020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 1087162020 is about 32972.1400579338. The cubic root of 1087162020 is about 1028.2485142088.

Adding to 1087162020 its reverse (202617801), we get a palindrome (1289779821).

The spelling of 1087162020 in words is "one billion, eighty-seven million, one hundred sixty-two thousand, twenty".