43642398 has 16 divisors (see below), whose sum is σ = 87872400. Its totient is φ = 14449536.

The previous prime is 43642369. The next prime is 43642399. The reversal of 43642398 is 89324634.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43642399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23515 + ... + 25302.

It is an arithmetic number, because the mean of its divisors is an integer number (5492025).

Almost surely, 2^43642398 is an apocalyptic number.

43642398 is an abundant number, since it is smaller than the sum of its proper divisors (44230002).

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

43642398 is a wasteful number, since it uses less digits than its factorization.

43642398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48971.

The product of its digits is 124416, while the sum is 39.

The square root of 43642398 is about 6606.2393235486. The cubic root of 43642398 is about 352.0758219499.

The spelling of 43642398 in words is "forty-three million, six hundred forty-two thousand, three hundred ninety-eight".