154972770 has 32 divisors (see below), whose sum is σ = 375553152. Its totient is φ = 40924032.

The previous prime is 154972733. The next prime is 154972777. The reversal of 154972770 is 77279451.

It is not an unprimeable number, because it can be changed into a prime (154972777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21987 + ... + 28166.

It is an arithmetic number, because the mean of its divisors is an integer number (11736036).

Almost surely, 2^154972770 is an apocalyptic number.

154972770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

154972770 is an abundant number, since it is smaller than the sum of its proper divisors (220580382).

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

154972770 is a wasteful number, since it uses less digits than its factorization.

154972770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50266.

The product of its (nonzero) digits is 123480, while the sum is 42.

The square root of 154972770 is about 12448.8059668387. The cubic root of 154972770 is about 537.1370775249.

The spelling of 154972770 in words is "one hundred fifty-four million, nine hundred seventy-two thousand, seven hundred seventy".