147421836 has 48 divisors (see below), whose sum is σ = 402326400. Its totient is φ = 46553616.

The previous prime is 147421783. The next prime is 147421837. The reversal of 147421836 is 638124741.

147421836 is a `hidden beast` number, since 1 + 474 + 2 + 183 + 6 = 666.

It is a super-2 number, since 2×147421836² = 43466395459221792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 147421836.

It is not an unprimeable number, because it can be changed into a prime (147421837) 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, 33870 + ... + 37973.

It is an arithmetic number, because the mean of its divisors is an integer number (8381800).

Almost surely, 2^147421836 is an apocalyptic number.

It is an amenable number.

147421836 is an abundant number, since it is smaller than the sum of its proper divisors (254904564).

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

147421836 is a wasteful number, since it uses less digits than its factorization.

147421836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71875 (or 71867 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 147421836 is about 12141.7394141037. The cubic root of 147421836 is about 528.2675555133.

The spelling of 147421836 in words is "one hundred forty-seven million, four hundred twenty-one thousand, eight hundred thirty-six".