3746520 has 64 divisors (see below), whose sum is σ = 12492000. Its totient is φ = 998784.

The previous prime is 3746513. The next prime is 3746521. The reversal of 3746520 is 256473.

It is a happy number.

3746520 is a `hidden beast` number, since 3 + 7 + 4 + 652 + 0 = 666.

3746520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3746520² = 28072824220800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3746521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655 + ... + 2814.

Almost surely, 2^3746520 is an apocalyptic number.

3746520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3746520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6246000).

3746520 is an abundant number, since it is smaller than the sum of its proper divisors (8745480).

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

3746520 is a wasteful number, since it uses less digits than its factorization.

3746520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3746520 is about 1935.5929324112. The cubic root of 3746520 is about 155.3135518945.

Subtracting from 3746520 its product of nonzero digits (5040), we obtain a triangular number (3741480 = T₂₇₃₅).

The spelling of 3746520 in words is "three million, seven hundred forty-six thousand, five hundred twenty".