67390140 has 48 divisors (see below), whose sum is σ = 189066528. Its totient is φ = 17935104.

The previous prime is 67390139. The next prime is 67390153. The reversal of 67390140 is 4109376.

It is a happy number.

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 = 67390098 and 67390107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45654 + ... + 47106.

It is an arithmetic number, because the mean of its divisors is an integer number (3938886).

Almost surely, 2^67390140 is an apocalyptic number.

67390140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67390140 is an abundant number, since it is smaller than the sum of its proper divisors (121676388).

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

67390140 is a wasteful number, since it uses less digits than its factorization.

67390140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2238 (or 2236 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 67390140 is about 8209.1497732713. The cubic root of 67390140 is about 406.9416292685.

The spelling of 67390140 in words is "sixty-seven million, three hundred ninety thousand, one hundred forty".