134473640 has 192 divisors, whose sum is σ = 389059200. Its totient is φ = 41513472.

The previous prime is 134473639. The next prime is 134473643. The reversal of 134473640 is 46374431.

It is a junction number, because it is equal to n+sod(n) for n = 134473597 and 134473606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134473643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 856442 + ... + 856598.

It is an arithmetic number, because the mean of its divisors is an integer number (2026350).

Almost surely, 2^134473640 is an apocalyptic number.

134473640 is a gapful number since it is divisible by the number (10) 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 134473640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194529600).

134473640 is an abundant number, since it is smaller than the sum of its proper divisors (254585560).

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

134473640 is a wasteful number, since it uses less digits than its factorization.

134473640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 134473640 is about 11596.2769887581. The cubic root of 134473640 is about 512.3252023360.

The spelling of 134473640 in words is "one hundred thirty-four million, four hundred seventy-three thousand, six hundred forty".