1020780372 has 24 divisors (see below), whose sum is σ = 2389488192. Its totient is φ = 339164800.

The previous prime is 1020780353. The next prime is 1020780379. The reversal of 1020780372 is 2730870201.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020780379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133029 + ... + 140492.

It is an arithmetic number, because the mean of its divisors is an integer number (99562008).

Almost surely, 2^1020780372 is an apocalyptic number.

1020780372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1020780372 is an abundant number, since it is smaller than the sum of its proper divisors (1368707820).

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

1020780372 is a wasteful number, since it uses less digits than its factorization.

1020780372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273839 (or 273837 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1020780372 is about 31949.6537070435. The cubic root of 1020780372 is about 1006.8793565964.

The spelling of 1020780372 in words is "one billion, twenty million, seven hundred eighty thousand, three hundred seventy-two".