1465231240 has 64 divisors (see below), whose sum is σ = 3632195520. Its totient is φ = 527520000.

The previous prime is 1465231237. The next prime is 1465231277. The reversal of 1465231240 is 421325641.

It is a junction number, because it is equal to n+sod(n) for n = 1465231199 and 1465231208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27955 + ... + 60925.

It is an arithmetic number, because the mean of its divisors is an integer number (56753055).

Almost surely, 2^1465231240 is an apocalyptic number.

1465231240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1465231240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816097760).

1465231240 is an abundant number, since it is smaller than the sum of its proper divisors (2166964280).

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

1465231240 is a wasteful number, since it uses less digits than its factorization.

1465231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33094 (or 33090 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1465231240 is about 38278.3390444256. The cubic root of 1465231240 is about 1135.8005026420.

Adding to 1465231240 its reverse (421325641), we get a palindrome (1886556881).

The spelling of 1465231240 in words is "one billion, four hundred sixty-five million, two hundred thirty-one thousand, two hundred forty".