145728734 has 4 divisors (see below), whose sum is σ = 218593104. Its totient is φ = 72864366.

The previous prime is 145728673. The next prime is 145728809. The reversal of 145728734 is 437827541.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 145728691 and 145728700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36432182 + ... + 36432185.

It is an arithmetic number, because the mean of its divisors is an integer number (54648276).

Almost surely, 2^145728734 is an apocalyptic number.

145728734 is a deficient number, since it is larger than the sum of its proper divisors (72864370).

145728734 is an equidigital number, since it uses as much as digits as its factorization.

145728734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72864369.

The product of its digits is 188160, while the sum is 41.

The square root of 145728734 is about 12071.8156877911. The cubic root of 145728734 is about 526.2374245617.

The spelling of 145728734 in words is "one hundred forty-five million, seven hundred twenty-eight thousand, seven hundred thirty-four".