147781930 has 16 divisors (see below), whose sum is σ = 269652744. Its totient is φ = 58302720.

The previous prime is 147781897. The next prime is 147781951. The reversal of 147781930 is 39187741.

It can be written as a sum of positive squares in 4 ways, for example, as 115326121 + 32455809 = 10739^2 + 5697^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100491 + ... + 101950.

Almost surely, 2^147781930 is an apocalyptic number.

147781930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

147781930 is a deficient number, since it is larger than the sum of its proper divisors (121870814).

147781930 is a wasteful number, since it uses less digits than its factorization.

147781930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202521.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 147781930 is about 12156.5591348868. The cubic root of 147781930 is about 528.6973229289.

The spelling of 147781930 in words is "one hundred forty-seven million, seven hundred eighty-one thousand, nine hundred thirty".