135457820 has 24 divisors (see below), whose sum is σ = 289127328. Its totient is φ = 53294400.

The previous prime is 135457813. The next prime is 135457823. The reversal of 135457820 is 28754531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135457823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54296 + ... + 56735.

It is an arithmetic number, because the mean of its divisors is an integer number (12046972).

Almost surely, 2^135457820 is an apocalyptic number.

135457820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135457820 is an abundant number, since it is smaller than the sum of its proper divisors (153669508).

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

135457820 is a wasteful number, since it uses less digits than its factorization.

135457820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111101 (or 111099 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 135457820 is about 11638.6347996662. The cubic root of 135457820 is about 513.5720268843.

The spelling of 135457820 in words is "one hundred thirty-five million, four hundred fifty-seven thousand, eight hundred twenty".