1381452528 has 20 divisors (see below), whose sum is σ = 3568752488. Its totient is φ = 460484160.

The previous prime is 1381452517. The next prime is 1381452601. The reversal of 1381452528 is 8252541831.

It is a super-2 number, since 2×1381452528² = 3816822174235181568, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14390083 + ... + 14390178.

Almost surely, 2^1381452528 is an apocalyptic number.

It is an amenable number.

1381452528 is an abundant number, since it is smaller than the sum of its proper divisors (2187299960).

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

1381452528 is a wasteful number, since it uses less digits than its factorization.

1381452528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28780272 (or 28780266 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 1381452528 is about 37167.8964699376. The cubic root of 1381452528 is about 1113.7267610071.

The spelling of 1381452528 in words is "one billion, three hundred eighty-one million, four hundred fifty-two thousand, five hundred twenty-eight".