154489420 has 24 divisors (see below), whose sum is σ = 326801664. Its totient is φ = 61343616.

The previous prime is 154489381. The next prime is 154489441. The reversal of 154489420 is 24984451.

It is a self number, because there is not a number n which added to its sum of digits gives 154489420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25452 + ... + 30931.

It is an arithmetic number, because the mean of its divisors is an integer number (13616736).

Almost surely, 2^154489420 is an apocalyptic number.

154489420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154489420 is an abundant number, since it is smaller than the sum of its proper divisors (172312244).

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

154489420 is a wasteful number, since it uses less digits than its factorization.

154489420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56529 (or 56527 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 154489420 is about 12429.3772973548. The cubic root of 154489420 is about 536.5780640648.

The spelling of 154489420 in words is "one hundred fifty-four million, four hundred eighty-nine thousand, four hundred twenty".