145784136 has 64 divisors (see below), whose sum is σ = 372081600. Its totient is φ = 47590400.

The previous prime is 145784123. The next prime is 145784141. The reversal of 145784136 is 631487541.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 145784094 and 145784103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279556 + ... + 280076.

It is an arithmetic number, because the mean of its divisors is an integer number (5813775).

Almost surely, 2^145784136 is an apocalyptic number.

It is an amenable number.

145784136 is an abundant number, since it is smaller than the sum of its proper divisors (226297464).

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

145784136 is a wasteful number, since it uses less digits than its factorization.

145784136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750 (or 746 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 145784136 is about 12074.1101535475. The cubic root of 145784136 is about 526.3041030430.

The spelling of 145784136 in words is "one hundred forty-five million, seven hundred eighty-four thousand, one hundred thirty-six".