43402164 has 24 divisors (see below), whose sum is σ = 109062240. Its totient is φ = 13354464.

The previous prime is 43402159. The next prime is 43402181. The reversal of 43402164 is 46120434.

It is a congruent number.

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, 138954 + ... + 139265.

It is an arithmetic number, because the mean of its divisors is an integer number (4544260).

Almost surely, 2^43402164 is an apocalyptic number.

It is an amenable number.

43402164 is an abundant number, since it is smaller than the sum of its proper divisors (65660076).

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

43402164 is a wasteful number, since it uses less digits than its factorization.

43402164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278239 (or 278237 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 43402164 is about 6588.0318760613. The cubic root of 43402164 is about 351.4286206245.

Adding to 43402164 its reverse (46120434), we get a palindrome (89522598).

The spelling of 43402164 in words is "forty-three million, four hundred two thousand, one hundred sixty-four".