145720336 has 20 divisors (see below), whose sum is σ = 291441664. Its totient is φ = 70509600.

The previous prime is 145720321. The next prime is 145720349. The reversal of 145720336 is 633027541.

145720336 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 145720298 and 145720307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146400 + ... + 147391.

Almost surely, 2^145720336 is an apocalyptic number.

145720336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145720336 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

145720336 is a wasteful number, since it uses less digits than its factorization.

145720336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293830 (or 293824 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 145720336 is about 12071.4678477806. The cubic root of 145720336 is about 526.2273157642.

Adding to 145720336 its reverse (633027541), we get a palindrome (778747877).

The spelling of 145720336 in words is "one hundred forty-five million, seven hundred twenty thousand, three hundred thirty-six".