145283887 has 16 divisors (see below), whose sum is σ = 181481472. Its totient is φ = 113420160.

The previous prime is 145283849. The next prime is 145283891. The reversal of 145283887 is 788382541.

It is not a de Polignac number, because 145283887 - 2²³ = 136895279 is a prime.

It is a super-2 number, since 2×145283887² = 42214815643657538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145283807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16003 + ... + 23380.

It is an arithmetic number, because the mean of its divisors is an integer number (11342592).

Almost surely, 2^145283887 is an apocalyptic number.

145283887 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

145283887 is a deficient number, since it is larger than the sum of its proper divisors (36197585).

145283887 is a wasteful number, since it uses less digits than its factorization.

145283887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39438.

The product of its digits is 430080, while the sum is 46.

The square root of 145283887 is about 12053.3765808590. The cubic root of 145283887 is about 525.7014201304.

The spelling of 145283887 in words is "one hundred forty-five million, two hundred eighty-three thousand, eight hundred eighty-seven".