135472220 has 24 divisors (see below), whose sum is σ = 306376224. Its totient is φ = 50020416.

The previous prime is 135472219. The next prime is 135472229. The reversal of 135472220 is 22274531.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 135472220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135472229) 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, 260264 + ... + 260783.

It is an arithmetic number, because the mean of its divisors is an integer number (12765676).

Almost surely, 2^135472220 is an apocalyptic number.

135472220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135472220 is an abundant number, since it is smaller than the sum of its proper divisors (170904004).

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

135472220 is a wasteful number, since it uses less digits than its factorization.

135472220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521069 (or 521067 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 135472220 is about 11639.2534124831. The cubic root of 135472220 is about 513.5902248619.

The spelling of 135472220 in words is "one hundred thirty-five million, four hundred seventy-two thousand, two hundred twenty".