7249986 has 20 divisors (see below), whose sum is σ = 16245702. Its totient is φ = 2416608.

The previous prime is 7249981. The next prime is 7249997. The reversal of 7249986 is 6899427.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6579225 + 670761 = 2565^2 + 819^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7249981) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22215 + ... + 22538.

Almost surely, 2^7249986 is an apocalyptic number.

7249986 is an abundant number, since it is smaller than the sum of its proper divisors (8995716).

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

7249986 is a wasteful number, since it uses less digits than its factorization.

7249986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44767 (or 44758 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 7249986 is about 2692.5798038313. The cubic root of 7249986 is about 193.5437074514.

The spelling of 7249986 in words is "seven million, two hundred forty-nine thousand, nine hundred eighty-six".