1151440240 has 40 divisors (see below), whose sum is σ = 2739364848. Its totient is φ = 449863680.

The previous prime is 1151440231. The next prime is 1151440267. The reversal of 1151440240 is 420441511.

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, 163921 + ... + 170800.

Almost surely, 2^1151440240 is an apocalyptic number.

1151440240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151440240 is an abundant number, since it is smaller than the sum of its proper divisors (1587924608).

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

1151440240 is a wasteful number, since it uses less digits than its factorization.

1151440240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334777 (or 334771 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1151440240 is about 33932.8784514370. The cubic root of 1151440240 is about 1048.1267401059.

Adding to 1151440240 its reverse (420441511), we get a palindrome (1571881751).

The spelling of 1151440240 in words is "one billion, one hundred fifty-one million, four hundred forty thousand, two hundred forty".