134435840 has 264 divisors, whose sum is σ = 418177536. Its totient is φ = 40550400.

The previous prime is 134435831. The next prime is 134435857. The reversal of 134435840 is 48534431.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 134435797 and 134435806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4336625 + ... + 4336655.

Almost surely, 2^134435840 is an apocalyptic number.

134435840 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 134435840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209088768).

134435840 is an abundant number, since it is smaller than the sum of its proper divisors (283741696).

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

134435840 is a wasteful number, since it uses less digits than its factorization.

134435840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 134435840 is about 11594.6470407684. The cubic root of 134435840 is about 512.2771936520.

The spelling of 134435840 in words is "one hundred thirty-four million, four hundred thirty-five thousand, eight hundred forty".