154085220 has 48 divisors (see below), whose sum is σ = 479377920. Its totient is φ = 41089248.

The previous prime is 154085209. The next prime is 154085237. The reversal of 154085220 is 22580451.

It is a happy number.

154085220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 142132 + ... + 143211.

It is an arithmetic number, because the mean of its divisors is an integer number (9987040).

Almost surely, 2^154085220 is an apocalyptic number.

154085220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154085220 is an abundant number, since it is smaller than the sum of its proper divisors (325292700).

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

154085220 is a wasteful number, since it uses less digits than its factorization.

154085220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285361 (or 285353 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 154085220 is about 12413.1067827519. The cubic root of 154085220 is about 536.1096948208.

The spelling of 154085220 in words is "one hundred fifty-four million, eighty-five thousand, two hundred twenty".