3728247 has 8 divisors (see below), whose sum is σ = 5034240. Its totient is φ = 2453880.

The previous prime is 3728243. The next prime is 3728251. The reversal of 3728247 is 7428273.

It is an interprime number because it is at equal distance from previous prime (3728243) and next prime (3728251).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3728247 - 2² = 3728243 is a prime.

3728247 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7629 + ... + 8102.

It is an arithmetic number, because the mean of its divisors is an integer number (629280).

Almost surely, 2^3728247 is an apocalyptic number.

3728247 is a deficient number, since it is larger than the sum of its proper divisors (1305993).

3728247 is a wasteful number, since it uses less digits than its factorization.

3728247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15813.

The product of its digits is 18816, while the sum is 33.

The square root of 3728247 is about 1930.8669037507. The cubic root of 3728247 is about 155.0606353124.

The spelling of 3728247 in words is "three million, seven hundred twenty-eight thousand, two hundred forty-seven".