67342440 has 128 divisors (see below), whose sum is σ = 233435520. Its totient is φ = 15360000.

The previous prime is 67342421. The next prime is 67342453. The reversal of 67342440 is 4424376.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 67342398 and 67342407.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20940 + ... + 23940.

It is an arithmetic number, because the mean of its divisors is an integer number (1823715).

Almost surely, 2^67342440 is an apocalyptic number.

67342440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67342440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116717760).

67342440 is an abundant number, since it is smaller than the sum of its proper divisors (166093080).

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

67342440 is a wasteful number, since it uses less digits than its factorization.

67342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043 (or 3039 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 67342440 is about 8206.2439642019. The cubic root of 67342440 is about 406.8455929771.

The spelling of 67342440 in words is "sixty-seven million, three hundred forty-two thousand, four hundred forty".