154215020 has 24 divisors (see below), whose sum is σ = 340897200. Its totient is φ = 58439232.

The previous prime is 154215013. The next prime is 154215043. The reversal of 154215020 is 20512451.

154215020 is digitally balanced in base 3, 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 (20).

It is a junction number, because it is equal to n+sod(n) for n = 154214983 and 154215001.

It is an unprimeable number.

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, 202535 + ... + 203294.

It is an arithmetic number, because the mean of its divisors is an integer number (14204050).

Almost surely, 2^154215020 is an apocalyptic number.

154215020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154215020 is an abundant number, since it is smaller than the sum of its proper divisors (186682180).

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

154215020 is a wasteful number, since it uses less digits than its factorization.

154215020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405857 (or 405855 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 154215020 is about 12418.3340267525. The cubic root of 154215020 is about 536.2601905609.

Adding to 154215020 its reverse (20512451), we get a palindrome (174727471).

The spelling of 154215020 in words is "one hundred fifty-four million, two hundred fifteen thousand, twenty".