1520454312 has 48 divisors (see below), whose sum is σ = 4434661140. Its totient is φ = 467831808.

The previous prime is 1520454289. The next prime is 1520454317. The reversal of 1520454312 is 2134540251.

It can be written as a sum of positive squares in 2 ways, for example, as 1516790916 + 3663396 = 38946^2 + 1914^2 .

It is not an unprimeable number, because it can be changed into a prime (1520454317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811273 + ... + 813144.

Almost surely, 2^1520454312 is an apocalyptic number.

1520454312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1520454312 is an abundant number, since it is smaller than the sum of its proper divisors (2914206828).

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

1520454312 is a wasteful number, since it uses less digits than its factorization.

1520454312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624442 (or 1624435 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1520454312 is about 38993.0033724000. The cubic root of 1520454312 is about 1149.8939566995.

Adding to 1520454312 its reverse (2134540251), we get a palindrome (3654994563).

The spelling of 1520454312 in words is "one billion, five hundred twenty million, four hundred fifty-four thousand, three hundred twelve".