134573440 has 64 divisors (see below), whose sum is σ = 330467760. Its totient is φ = 52365312.

The previous prime is 134573401. The next prime is 134573441. The reversal of 134573440 is 44375431.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×134573440² = 36220021506867200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134573441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20839 + ... + 26521.

Almost surely, 2^134573440 is an apocalyptic number.

134573440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

134573440 is the 9472-nd pentagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134573440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165233880).

134573440 is an abundant number, since it is smaller than the sum of its proper divisors (195894320).

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

134573440 is an equidigital number, since it uses as much as digits as its factorization.

134573440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5739 (or 5727 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 134573440 is about 11600.5792958800. The cubic root of 134573440 is about 512.4519122043.

The spelling of 134573440 in words is "one hundred thirty-four million, five hundred seventy-three thousand, four hundred forty".