134978840 has 16 divisors (see below), whose sum is σ = 303702480. Its totient is φ = 53991520.

The previous prime is 134978819. The next prime is 134978887. The reversal of 134978840 is 48879431.

It is a junction number, because it is equal to n+sod(n) for n = 134978791 and 134978800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687196 + ... + 1687275.

It is an arithmetic number, because the mean of its divisors is an integer number (18981405).

Almost surely, 2^134978840 is an apocalyptic number.

134978840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134978840 is an abundant number, since it is smaller than the sum of its proper divisors (168723640).

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

134978840 is a wasteful number, since it uses less digits than its factorization.

134978840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3374482 (or 3374478 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 134978840 is about 11618.0394215203. The cubic root of 134978840 is about 512.9659803129.

The spelling of 134978840 in words is "one hundred thirty-four million, nine hundred seventy-eight thousand, eight hundred forty".