1023377920 has 40 divisors (see below), whose sum is σ = 2453714604. Its totient is φ = 409350144.

The previous prime is 1023377911. The next prime is 1023377959. The reversal of 1023377920 is 297733201.

It can be written as a sum of positive squares in 2 ways, for example, as 1014804736 + 8573184 = 31856^2 + 2928^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197319 + ... + 202438.

Almost surely, 2^1023377920 is an apocalyptic number.

1023377920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023377920 is an abundant number, since it is smaller than the sum of its proper divisors (1430336684).

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

1023377920 is an frugal number, since it uses more digits than its factorization.

1023377920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399780 (or 399764 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 1023377920 is about 31990.2785233264. The cubic root of 1023377920 is about 1007.7326913602.

The spelling of 1023377920 in words is "one billion, twenty-three million, three hundred seventy-seven thousand, nine hundred twenty".