1154452020 has 48 divisors (see below), whose sum is σ = 3239466048. Its totient is φ = 307187200.

The previous prime is 1154452007. The next prime is 1154452021. The reversal of 1154452020 is 202544511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154452021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7420 + ... + 48620.

It is an arithmetic number, because the mean of its divisors is an integer number (67488876).

Almost surely, 2^1154452020 is an apocalyptic number.

1154452020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154452020 is an abundant number, since it is smaller than the sum of its proper divisors (2085014028).

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

1154452020 is a wasteful number, since it uses less digits than its factorization.

1154452020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41680 (or 41678 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1154452020 is about 33977.2279622691. The cubic root of 1154452020 is about 1049.0397933773.

Adding to 1154452020 its reverse (202544511), we get a palindrome (1356996531).

The spelling of 1154452020 in words is "one billion, one hundred fifty-four million, four hundred fifty-two thousand, twenty".