145877838 has 16 divisors (see below), whose sum is σ = 292118400. Its totient is φ = 48565496.

The previous prime is 145877819. The next prime is 145877857. The reversal of 145877838 is 838778541.

It is an interprime number because it is at equal distance from previous prime (145877819) and next prime (145877857).

It is a super-3 number, since 3×145877838³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

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, 9738 + ... + 19661.

It is an arithmetic number, because the mean of its divisors is an integer number (18257400).

Almost surely, 2^145877838 is an apocalyptic number.

145877838 is an abundant number, since it is smaller than the sum of its proper divisors (146240562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145877838 is a wasteful number, since it uses less digits than its factorization.

145877838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30231.

The product of its digits is 1505280, while the sum is 51.

The square root of 145877838 is about 12077.9898161904. The cubic root of 145877838 is about 526.4168386404.

The spelling of 145877838 in words is "one hundred forty-five million, eight hundred seventy-seven thousand, eight hundred thirty-eight".