1140820452 has 72 divisors (see below), whose sum is σ = 2928062592. Its totient is φ = 374472000.

The previous prime is 1140820441. The next prime is 1140820453. The reversal of 1140820452 is 2540280411.

1140820452 is a `hidden beast` number, since 1 + 1 + 408 + 204 + 52 = 666.

It is not an unprimeable number, because it can be changed into a prime (1140820453) 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, 766453 + ... + 767939.

It is an arithmetic number, because the mean of its divisors is an integer number (40667536).

Almost surely, 2^1140820452 is an apocalyptic number.

1140820452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1140820452 is an abundant number, since it is smaller than the sum of its proper divisors (1787242140).

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

1140820452 is a wasteful number, since it uses less digits than its factorization.

1140820452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1804 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1140820452 is about 33776.0336925460. The cubic root of 1140820452 is about 1044.8944749712.

The spelling of 1140820452 in words is "one billion, one hundred forty million, eight hundred twenty thousand, four hundred fifty-two".