147280640 has 144 divisors (see below), whose sum is σ = 389406528. Its totient is φ = 53035008.

The previous prime is 147280621. The next prime is 147280667. The reversal of 147280640 is 46082741.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 147280597 and 147280606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 881837 + ... + 882003.

It is an arithmetic number, because the mean of its divisors is an integer number (2704212).

Almost surely, 2^147280640 is an apocalyptic number.

147280640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 147280640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194703264).

147280640 is an abundant number, since it is smaller than the sum of its proper divisors (242125888).

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

147280640 is a wasteful number, since it uses less digits than its factorization.

147280640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 147280640 is about 12135.9235330485. The cubic root of 147280640 is about 528.0988489554.

The spelling of 147280640 in words is "one hundred forty-seven million, two hundred eighty thousand, six hundred forty".