145931776 has 20 divisors (see below), whose sum is σ = 291579552. Its totient is φ = 72965632.

The previous prime is 145931759. The next prime is 145931783. The reversal of 145931776 is 677139541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142000 + ... + 143023.

Almost surely, 2^145931776 is an apocalyptic number.

145931776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145931776 is a deficient number, since it is larger than the sum of its proper divisors (145647776).

145931776 is an frugal number, since it uses more digits than its factorization.

145931776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285041 (or 285025 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 145931776 is about 12080.2225145069. Note that the first 3 decimals coincide. The cubic root of 145931776 is about 526.4817111233.

The spelling of 145931776 in words is "one hundred forty-five million, nine hundred thirty-one thousand, seven hundred seventy-six".