3138534 has 96 divisors (see below), whose sum is σ = 8778240. Its totient is φ = 812592.

The previous prime is 3138529. The next prime is 3138539. The reversal of 3138534 is 4358313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3138529) and next prime (3138539).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

Its product of digits (4320) is a multiple of the sum of its prime divisors (54).

It is a junction number, because it is equal to n+sod(n) for n = 3138498 and 3138507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136447 + ... + 136469.

It is an arithmetic number, because the mean of its divisors is an integer number (91440).

Almost surely, 2^3138534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3138534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389120).

3138534 is an abundant number, since it is smaller than the sum of its proper divisors (5639706).

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

3138534 is a wasteful number, since it uses less digits than its factorization.

3138534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 54 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 3138534 is about 1771.5908105429. The cubic root of 3138534 is about 146.4116424495.

The spelling of 3138534 in words is "three million, one hundred thirty-eight thousand, five hundred thirty-four".