135400620 has 24 divisors (see below), whose sum is σ = 379121904. Its totient is φ = 36106816.

The previous prime is 135400589. The next prime is 135400627. The reversal of 135400620 is 26004531.

It is a happy number.

It is a super-4 number, since 4×135400620⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (135400627) 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, 1128279 + ... + 1128398.

It is an arithmetic number, because the mean of its divisors is an integer number (15796746).

Almost surely, 2^135400620 is an apocalyptic number.

135400620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135400620 is an abundant number, since it is smaller than the sum of its proper divisors (243721284).

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

135400620 is a wasteful number, since it uses less digits than its factorization.

135400620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256689 (or 2256687 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 135400620 is about 11636.1772073134. The cubic root of 135400620 is about 513.4997277340.

The spelling of 135400620 in words is "one hundred thirty-five million, four hundred thousand, six hundred twenty".