3738021 has 8 divisors (see below), whose sum is σ = 5696064. Its totient is φ = 2136000.

The previous prime is 3738017. The next prime is 3738023. The reversal of 3738021 is 1208373.

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

It is not a de Polignac number, because 3738021 - 2² = 3738017 is a prime.

It is a Curzon number.

3738021 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3737982 and 3738000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3738023) 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, 88980 + ... + 89021.

It is an arithmetic number, because the mean of its divisors is an integer number (712008).

Almost surely, 2^3738021 is an apocalyptic number.

It is an amenable number.

3738021 is a deficient number, since it is larger than the sum of its proper divisors (1958043).

3738021 is a wasteful number, since it uses less digits than its factorization.

3738021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178011.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 3738021 is about 1933.3962346089. The cubic root of 3738021 is about 155.1960197769.

It can be divided in two parts, 37380 and 21, that added together give a triangular number (37401 = T₂₇₃).

The spelling of 3738021 in words is "three million, seven hundred thirty-eight thousand, twenty-one".