147212538 has 16 divisors (see below), whose sum is σ = 321191136. Its totient is φ = 44609840.

The previous prime is 147212531. The next prime is 147212539. The reversal of 147212538 is 835212741.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 147212499 and 147212508.

It is not an unprimeable number, because it can be changed into a prime (147212531) 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 7 ways as a sum of consecutive naturals, for example, 1115181 + ... + 1115312.

It is an arithmetic number, because the mean of its divisors is an integer number (20074446).

Almost surely, 2^147212538 is an apocalyptic number.

147212538 is an abundant number, since it is smaller than the sum of its proper divisors (173978598).

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

147212538 is a wasteful number, since it uses less digits than its factorization.

147212538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230509.

The product of its digits is 13440, while the sum is 33.

The square root of 147212538 is about 12133.1174065036. The cubic root of 147212538 is about 528.0174394492.

The spelling of 147212538 in words is "one hundred forty-seven million, two hundred twelve thousand, five hundred thirty-eight".