7286685438 has 16 divisors (see below), whose sum is σ = 14584674816. Its totient is φ = 2427011160.

The previous prime is 7286685409. The next prime is 7286685451. The reversal of 7286685438 is 8345866827.

It is a happy number.

It is a super-2 number, since 2×7286685438² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462606 + ... + 478097.

It is an arithmetic number, because the mean of its divisors is an integer number (911542176).

Almost surely, 2^7286685438 is an apocalyptic number.

7286685438 is an abundant number, since it is smaller than the sum of its proper divisors (7297989378).

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

7286685438 is a wasteful number, since it uses less digits than its factorization.

7286685438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941999.

The product of its digits is 15482880, while the sum is 57.

The square root of 7286685438 is about 85362.0843114787. The cubic root of 7286685438 is about 1938.6973078640.

The spelling of 7286685438 in words is "seven billion, two hundred eighty-six million, six hundred eighty-five thousand, four hundred thirty-eight".