145355838 has 16 divisors (see below), whose sum is σ = 300089856. Its totient is φ = 46888920.

The previous prime is 145355803. The next prime is 145355843. The reversal of 145355838 is 838553541.

It is a super-2 number, since 2×145355838² = 42256639281364488, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145355838.

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, 390556 + ... + 390927.

It is an arithmetic number, because the mean of its divisors is an integer number (18755616).

Almost surely, 2^145355838 is an apocalyptic number.

145355838 is an abundant number, since it is smaller than the sum of its proper divisors (154734018).

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

145355838 is a wasteful number, since it uses less digits than its factorization.

145355838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781519.

The product of its digits is 288000, while the sum is 42.

The square root of 145355838 is about 12056.3608937357. The cubic root of 145355838 is about 525.7881893316.

It can be divided in two parts, 1453 and 55838, that added together give a triangular number (57291 = T₃₃₈).

The spelling of 145355838 in words is "one hundred forty-five million, three hundred fifty-five thousand, eight hundred thirty-eight".