145904136 has 64 divisors (see below), whose sum is σ = 419143680. Its totient is φ = 41459520.

The previous prime is 145904119. The next prime is 145904137. The reversal of 145904136 is 631409541.

It is a junction number, because it is equal to n+sod(n) for n = 145904097 and 145904106.

It is not an unprimeable number, because it can be changed into a prime (145904137) 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, 29815 + ... + 34361.

It is an arithmetic number, because the mean of its divisors is an integer number (6549120).

Almost surely, 2^145904136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145904136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209571840).

145904136 is an abundant number, since it is smaller than the sum of its proper divisors (273239544).

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

145904136 is a wasteful number, since it uses less digits than its factorization.

145904136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4754 (or 4750 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 145904136 is about 12079.0784416693. The cubic root of 145904136 is about 526.4484698519.

The spelling of 145904136 in words is "one hundred forty-five million, nine hundred four thousand, one hundred thirty-six".