1075780620 has 72 divisors (see below), whose sum is σ = 3276873600. Its totient is φ = 285672960.

The previous prime is 1075780619. The next prime is 1075780663. The reversal of 1075780620 is 260875701.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30981 + ... + 55779.

Almost surely, 2^1075780620 is an apocalyptic number.

1075780620 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 1075780620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638436800).

1075780620 is an abundant number, since it is smaller than the sum of its proper divisors (2201092980).

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

1075780620 is a wasteful number, since it uses less digits than its factorization.

1075780620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25055 (or 25050 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1075780620 is about 32799.0948045826. The cubic root of 1075780620 is about 1024.6477060170.

The spelling of 1075780620 in words is "one billion, seventy-five million, seven hundred eighty thousand, six hundred twenty".