1687433252 has 24 divisors (see below), whose sum is σ = 3017097216. Its totient is φ = 825588288.

The previous prime is 1687433207. The next prime is 1687433291. The reversal of 1687433252 is 2523347861.

It is a super-3 number, since 3×1687433252³ (a number of 29 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14333 + ... + 59835.

It is an arithmetic number, because the mean of its divisors is an integer number (125712384).

Almost surely, 2^1687433252 is an apocalyptic number.

It is an amenable number.

1687433252 is a deficient number, since it is larger than the sum of its proper divisors (1329663964).

1687433252 is a wasteful number, since it uses less digits than its factorization.

1687433252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45707 (or 45705 counting only the distinct ones).

The product of its digits is 241920, while the sum is 41.

The square root of 1687433252 is about 41078.3793740698. The cubic root of 1687433252 is about 1190.5350916069.

The spelling of 1687433252 in words is "one billion, six hundred eighty-seven million, four hundred thirty-three thousand, two hundred fifty-two".