145451844 has 36 divisors (see below), whose sum is σ = 368287920. Its totient is φ = 48402480.

The previous prime is 145451837. The next prime is 145451857. The reversal of 145451844 is 448154541.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 145451799 and 145451808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20659 + ... + 26789.

It is an arithmetic number, because the mean of its divisors is an integer number (10230220).

Almost surely, 2^145451844 is an apocalyptic number.

It is an amenable number.

145451844 is an abundant number, since it is smaller than the sum of its proper divisors (222836076).

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

145451844 is a wasteful number, since it uses less digits than its factorization.

145451844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800 (or 6795 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 145451844 is about 12060.3417862016. The cubic root of 145451844 is about 525.9039230420.

The spelling of 145451844 in words is "one hundred forty-five million, four hundred fifty-one thousand, eight hundred forty-four".