7972836 has 12 divisors (see below), whose sum is σ = 18603312. Its totient is φ = 2657608.

The previous prime is 7972831. The next prime is 7972849. The reversal of 7972836 is 6382797.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×7972836² = 127132227765792, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7⁴ + 9³ + 7⁸ + 2¹¹ + 8⁷ + 3¹⁰ + 6⁶ .

It is not an unprimeable number, because it can be changed into a prime (7972831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332190 + ... + 332213.

It is an arithmetic number, because the mean of its divisors is an integer number (1550276).

Almost surely, 2^7972836 is an apocalyptic number.

It is an amenable number.

7972836 is an abundant number, since it is smaller than the sum of its proper divisors (10630476).

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

7972836 is a wasteful number, since it uses less digits than its factorization.

7972836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664410 (or 664408 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 7972836 is about 2823.6210793943. The cubic root of 7972836 is about 199.7733766396.

The spelling of 7972836 in words is "seven million, nine hundred seventy-two thousand, eight hundred thirty-six".