7621992 has 96 divisors (see below), whose sum is σ = 24542400. Its totient is φ = 2147040.

The previous prime is 7621981. The next prime is 7621997. The reversal of 7621992 is 2991267.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (7621997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107317 + ... + 107387.

It is an arithmetic number, because the mean of its divisors is an integer number (255650).

Almost surely, 2^7621992 is an apocalyptic number.

7621992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7621992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12271200).

7621992 is an abundant number, since it is smaller than the sum of its proper divisors (16920408).

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

7621992 is a wasteful number, since it uses less digits than its factorization.

7621992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 83 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 7621992 is about 2760.7955375217. The cubic root of 7621992 is about 196.7989738198.

Multiplying 7621992 by its product of digits (13608), we get a square (103720067136 = 322056²).

The spelling of 7621992 in words is "seven million, six hundred twenty-one thousand, nine hundred ninety-two".