1332145520 has 80 divisors (see below), whose sum is σ = 3136861728. Its totient is φ = 526095360.

The previous prime is 1332145519. The next prime is 1332145541. The reversal of 1332145520 is 255412331.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1332145520² = 3549223372912140800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1332145520.

It is a congruent number.

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, 2852327 + ... + 2852793.

Almost surely, 2^1332145520 is an apocalyptic number.

1332145520 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 1332145520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568430864).

1332145520 is an abundant number, since it is smaller than the sum of its proper divisors (1804716208).

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

1332145520 is a wasteful number, since it uses less digits than its factorization.

1332145520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1332145520 is about 36498.5687390615. The cubic root of 1332145520 is about 1100.3154797598.

Adding to 1332145520 its reverse (255412331), we get a palindrome (1587557851).

The spelling of 1332145520 in words is "one billion, three hundred thirty-two million, one hundred forty-five thousand, five hundred twenty".