147447920 has 20 divisors (see below), whose sum is σ = 342816600. Its totient is φ = 58979136.

The previous prime is 147447893. The next prime is 147447929. The reversal of 147447920 is 29744741.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×147447920² = 43481778224652800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147447929) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 921470 + ... + 921629.

It is an arithmetic number, because the mean of its divisors is an integer number (17140830).

Almost surely, 2^147447920 is an apocalyptic number.

147447920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147447920 is an abundant number, since it is smaller than the sum of its proper divisors (195368680).

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

147447920 is a wasteful number, since it uses less digits than its factorization.

147447920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843112 (or 1843106 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 147447920 is about 12142.8135125267. The cubic root of 147447920 is about 528.2987099174.

It can be divided in two parts, 1474 and 47920, that added together give a palindrome (49394).

The spelling of 147447920 in words is "one hundred forty-seven million, four hundred forty-seven thousand, nine hundred twenty".