147872385 has 60 divisors (see below), whose sum is σ = 273369492. Its totient is φ = 76444992.

The previous prime is 147872369. The next prime is 147872393. The reversal of 147872385 is 583278741.

It can be written as a sum of positive squares in 2 ways, for example, as 80353296 + 67519089 = 8964^2 + 8217^2 .

It is not a de Polignac number, because 147872385 - 2⁴ = 147872369 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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

It is a self number, because there is not a number n which added to its sum of digits gives 147872385.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1781554 + ... + 1781636.

Almost surely, 2^147872385 is an apocalyptic number.

147872385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147872385 is a deficient number, since it is larger than the sum of its proper divisors (125497107).

147872385 is an frugal number, since it uses more digits than its factorization.

147872385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 144 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 147872385 is about 12160.2789852865. The cubic root of 147872385 is about 528.8051700393.

The spelling of 147872385 in words is "one hundred forty-seven million, eight hundred seventy-two thousand, three hundred eighty-five".