147478 has 8 divisors (see below), whose sum is σ = 232920. Its totient is φ = 69840.

The previous prime is 147457. The next prime is 147481. The reversal of 147478 is 874741.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1903 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (29115).

2¹⁴⁷⁴⁷⁸ is an apocalyptic number.

147478 is a deficient number, since it is larger than the sum of its proper divisors (85442).

147478 is a wasteful number, since it uses less digits than its factorization.

147478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3902.

The product of its digits is 6272, while the sum is 31.

The square root of 147478 is about 384.0286447649. The cubic root of 147478 is about 52.8334632533.

It can be divided in two parts, 147 and 478, that added together give a 4-th power (625 = 5⁴).

The spelling of 147478 in words is "one hundred forty-seven thousand, four hundred seventy-eight".