1630528452 has 72 divisors (see below), whose sum is σ = 4862387712. Its totient is φ = 450835200.

The previous prime is 1630528441. The next prime is 1630528457. The reversal of 1630528452 is 2548250361.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1630528457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96549 + ... + 112172.

Almost surely, 2^1630528452 is an apocalyptic number.

1630528452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1630528452 is an abundant number, since it is smaller than the sum of its proper divisors (3231859260).

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

1630528452 is a wasteful number, since it uses less digits than its factorization.

1630528452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208769 (or 208764 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1630528452 is about 40379.8025255201. The cubic root of 1630528452 is about 1176.9990902274. Note that the first 3 decimals are identical.

The spelling of 1630528452 in words is "one billion, six hundred thirty million, five hundred twenty-eight thousand, four hundred fifty-two".