1145652720 has 40 divisors (see below), whose sum is σ = 3551524176. Its totient is φ = 305507328.

The previous prime is 1145652689. The next prime is 1145652733. The reversal of 1145652720 is 272565411.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2386537 + ... + 2387016.

Almost surely, 2^1145652720 is an apocalyptic number.

1145652720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145652720 is an abundant number, since it is smaller than the sum of its proper divisors (2405871456).

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

1145652720 is a wasteful number, since it uses less digits than its factorization.

1145652720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773569 (or 4773563 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 1145652720 is about 33847.4920784391. The cubic root of 1145652720 is about 1046.3677122761.

The spelling of 1145652720 in words is "one billion, one hundred forty-five million, six hundred fifty-two thousand, seven hundred twenty".