3138550 has 24 divisors (see below), whose sum is σ = 5983992. Its totient is φ = 1224000.

The previous prime is 3138547. The next prime is 3138559. The reversal of 3138550 is 558313.

It is a happy number.

It is a super-2 number, since 2×3138550² = 19700992205000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1285 + ... + 2815.

It is an arithmetic number, because the mean of its divisors is an integer number (249333).

Almost surely, 2^3138550 is an apocalyptic number.

3138550 is a deficient number, since it is larger than the sum of its proper divisors (2845442).

3138550 is a wasteful number, since it uses less digits than its factorization.

3138550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 3138550 is about 1771.5953262526. The cubic root of 3138550 is about 146.4118912475.

The spelling of 3138550 in words is "three million, one hundred thirty-eight thousand, five hundred fifty".