134666820 has 48 divisors (see below), whose sum is σ = 418965120. Its totient is φ = 35911008.

The previous prime is 134666803. The next prime is 134666839. The reversal of 134666820 is 28666431.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124152 + ... + 125231.

It is an arithmetic number, because the mean of its divisors is an integer number (8728440).

Almost surely, 2^134666820 is an apocalyptic number.

134666820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134666820 is an abundant number, since it is smaller than the sum of its proper divisors (284298300).

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

134666820 is a wasteful number, since it uses less digits than its factorization.

134666820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249401 (or 249393 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 134666820 is about 11604.6033969283. The cubic root of 134666820 is about 512.5704142791.

The spelling of 134666820 in words is "one hundred thirty-four million, six hundred sixty-six thousand, eight hundred twenty".