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147996 = 22324111
BaseRepresentation
bin100100001000011100
321112000100
4210020130
514213441
63101100
71154322
oct441034
9245010
10147996
11a1212
1271790
1352494
143bd12
152dcb6
hex2421c

147996 has 18 divisors (see below), whose sum is σ = 374192. Its totient is φ = 49320.

The previous prime is 147977. The next prime is 147997. The reversal of 147996 is 699741.

Adding to 147996 its product of digits (13608), we get a square (161604 = 4022).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4111 = 147996 / (1 + 4 + 7 + 9 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 147996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147997) by changing a digit.

147996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2020 + ... + 2091.

147996 is a Friedman number, since it can be written as 9*(61+4^7)-9, using all its digits and the basic arithmetic operations.

2147996 is an apocalyptic number.

It is an amenable number.

147996 is an abundant number, since it is smaller than the sum of its proper divisors (226196).

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

147996 is a wasteful number, since it uses less digits than its factorization.

147996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4116 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 147996 is about 384.7024824459. The cubic root of 147996 is about 52.8952481846.

The spelling of 147996 in words is "one hundred forty-seven thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 36 4111 8222 12333 16444 24666 36999 49332 73998 147996