134463840 has 144 divisors (see below), whose sum is σ = 492800112. Its totient is φ = 30729216.

The previous prime is 134463821. The next prime is 134463869. The reversal of 134463840 is 48364431.

It is a happy number.

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, 20662 + ... + 26378.

It is an arithmetic number, because the mean of its divisors is an integer number (3422223).

Almost surely, 2^134463840 is an apocalyptic number.

134463840 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 134463840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246400056).

134463840 is an abundant number, since it is smaller than the sum of its proper divisors (358336272).

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

134463840 is a wasteful number, since it uses less digits than its factorization.

134463840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5749 (or 5734 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 134463840 is about 11595.8544316493. The cubic root of 134463840 is about 512.3127565041.

The spelling of 134463840 in words is "one hundred thirty-four million, four hundred sixty-three thousand, eight hundred forty".