1143654240 has 48 divisors (see below), whose sum is σ = 3602512368. Its totient is φ = 304974336.

The previous prime is 1143654229. The next prime is 1143654241. The reversal of 1143654240 is 424563411.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a junction number, because it is equal to n+sod(n) for n = 1143654198 and 1143654207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143654241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190827 + ... + 1191786.

It is an arithmetic number, because the mean of its divisors is an integer number (75052341).

Almost surely, 2^1143654240 is an apocalyptic number.

1143654240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143654240 is an abundant number, since it is smaller than the sum of its proper divisors (2458858128).

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

1143654240 is a wasteful number, since it uses less digits than its factorization.

1143654240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382631 (or 2382623 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1143654240 is about 33817.9573599589. The cubic root of 1143654240 is about 1045.7589291716.

The spelling of 1143654240 in words is "one billion, one hundred forty-three million, six hundred fifty-four thousand, two hundred forty".