1040202780 has 96 divisors (see below), whose sum is σ = 2956670976. Its totient is φ = 273217536.

The previous prime is 1040202767. The next prime is 1040202791. The reversal of 1040202780 is 872020401.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1040202780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2135697 + ... + 2136183.

It is an arithmetic number, because the mean of its divisors is an integer number (30798656).

Almost surely, 2^1040202780 is an apocalyptic number.

1040202780 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 1040202780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1478335488).

1040202780 is an abundant number, since it is smaller than the sum of its proper divisors (1916468196).

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

1040202780 is a wasteful number, since it uses less digits than its factorization.

1040202780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963 (or 961 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1040202780 is about 32252.1748103907. The cubic root of 1040202780 is about 1013.2252484075.

The spelling of 1040202780 in words is "one billion, forty million, two hundred two thousand, seven hundred eighty".