1073765420 has 144 divisors (see below), whose sum is σ = 2859585120. Its totient is φ = 335655936.

The previous prime is 1073765401. The next prime is 1073765453. The reversal of 1073765420 is 245673701.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1133387 + ... + 1134333.

It is an arithmetic number, because the mean of its divisors is an integer number (19858230).

Almost surely, 2^1073765420 is an apocalyptic number.

1073765420 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 1073765420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429792560).

1073765420 is an abundant number, since it is smaller than the sum of its proper divisors (1785819700).

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

1073765420 is a wasteful number, since it uses less digits than its factorization.

1073765420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072 (or 1063 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 1073765420 is about 32768.3600444087. The cubic root of 1073765420 is about 1024.0075009114.

The spelling of 1073765420 in words is "one billion, seventy-three million, seven hundred sixty-five thousand, four hundred twenty".