32428687 has 16 divisors (see below), whose sum is σ = 35397760. Its totient is φ = 29603232.

The previous prime is 32428661. The next prime is 32428691. The reversal of 32428687 is 78682423.

It is a cyclic number.

It is not a de Polignac number, because 32428687 - 2⁷ = 32428559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32428607) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114448 + ... + 114730.

It is an arithmetic number, because the mean of its divisors is an integer number (2212360).

Almost surely, 2^32428687 is an apocalyptic number.

32428687 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

32428687 is a deficient number, since it is larger than the sum of its proper divisors (2969073).

32428687 is a wasteful number, since it uses less digits than its factorization.

32428687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502.

The product of its digits is 129024, while the sum is 40.

The square root of 32428687 is about 5694.6191268600. The cubic root of 32428687 is about 318.8916309208.

The spelling of 32428687 in words is "thirty-two million, four hundred twenty-eight thousand, six hundred eighty-seven".