147403881 has 45 divisors (see below), whose sum is σ = 235714413. Its totient is φ = 91785960.

The previous prime is 147403859. The next prime is 147403909. The reversal of 147403881 is 188304741.

The square root of 147403881 is 12141.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-147403881 is a prime.

It is a super-2 number, since 2×147403881² = 43455808267724322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147403811) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 2076076 + ... + 2076146.

Almost surely, 2^147403881 is an apocalyptic number.

147403881 is the 12141-st square number.

147403881 is the 6071-st centered octagonal number.

It is an amenable number.

147403881 is a deficient number, since it is larger than the sum of its proper divisors (88310532).

147403881 is an frugal number, since it uses more digits than its factorization.

147403881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The cubic root of 147403881 is about 528.2461081500.

Multiplying 147403881 by its sum of digits (36), we get a square (5306539716 = 72846²).

The spelling of 147403881 in words is "one hundred forty-seven million, four hundred three thousand, eight hundred eighty-one".