7149438 has 32 divisors (see below), whose sum is σ = 16262400. Its totient is φ = 2326968.

The previous prime is 7149433. The next prime is 7149449. The reversal of 7149438 is 8349417.

It is a happy number.

It is a super-2 number, since 2×7149438² = 102228927431688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7149433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 783 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (508200).

Almost surely, 2^7149438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7149438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8131200).

7149438 is an abundant number, since it is smaller than the sum of its proper divisors (9112962).

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

7149438 is a wasteful number, since it uses less digits than its factorization.

7149438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133 (or 3127 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 7149438 is about 2673.8433013174. The cubic root of 7149438 is about 192.6448047469.

The spelling of 7149438 in words is "seven million, one hundred forty-nine thousand, four hundred thirty-eight".