147495978 has 120 divisors (see below), whose sum is σ = 407447172. Its totient is φ = 39626496.

The previous prime is 147495973. The next prime is 147496003. The reversal of 147495978 is 879594741.

147495978 is a `hidden beast` number, since 1 + 4 + 7 + 49 + 597 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 116057529 + 31438449 = 10773^2 + 5607^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (147495973) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 134400 + ... + 135492.

Almost surely, 2^147495978 is an apocalyptic number.

147495978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 147495978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (203723586).

147495978 is an abundant number, since it is smaller than the sum of its proper divisors (259951194).

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

147495978 is a wasteful number, since it uses less digits than its factorization.

147495978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138 (or 1122 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 147495978 is about 12144.7922172427. The cubic root of 147495978 is about 528.3561001732.

The spelling of 147495978 in words is "one hundred forty-seven million, four hundred ninety-five thousand, nine hundred seventy-eight".