1122490380 has 72 divisors (see below), whose sum is σ = 3454695216. Its totient is φ = 272117120.

The previous prime is 1122490357. The next prime is 1122490387. The reversal of 1122490380 is 830942211.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (1122490387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70047 + ... + 84566.

It is an arithmetic number, because the mean of its divisors is an integer number (47981878).

Almost surely, 2^1122490380 is an apocalyptic number.

1122490380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122490380 is an abundant number, since it is smaller than the sum of its proper divisors (2332204836).

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

1122490380 is a wasteful number, since it uses less digits than its factorization.

1122490380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154647 (or 154634 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1122490380 is about 33503.5875690947. The cubic root of 1122490380 is about 1039.2679698236.

The spelling of 1122490380 in words is "one billion, one hundred twenty-two million, four hundred ninety thousand, three hundred eighty".