32342640 has 80 divisors (see below), whose sum is σ = 109385856. Its totient is φ = 7840000.

The previous prime is 32342633. The next prime is 32342647. The reversal of 32342640 is 4624323.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (32342633) and next prime (32342647).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 32342640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32342647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3486 + ... + 8765.

Almost surely, 2^32342640 is an apocalyptic number.

32342640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

32342640 is an abundant number, since it is smaller than the sum of its proper divisors (77043216).

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

32342640 is a wasteful number, since it uses less digits than its factorization.

32342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12278 (or 12272 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 32342640 is about 5687.0589938913. The cubic root of 32342640 is about 318.6093297011.

Adding to 32342640 its reverse (4624323), we get a palindrome (36966963).

The spelling of 32342640 in words is "thirty-two million, three hundred forty-two thousand, six hundred forty".