7227990 has 144 divisors (see below), whose sum is σ = 24008400. Its totient is φ = 1491840.

The previous prime is 7227977. The next prime is 7228021. The reversal of 7227990 is 997227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 48436 + ... + 48584.

It is an arithmetic number, because the mean of its divisors is an integer number (166725).

Almost surely, 2^7227990 is an apocalyptic number.

7227990 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7227990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12004200).

7227990 is an abundant number, since it is smaller than the sum of its proper divisors (16780410).

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

7227990 is a wasteful number, since it uses less digits than its factorization.

7227990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 7227990 is about 2688.4921424471. The cubic root of 7227990 is about 193.3477760382.

The spelling of 7227990 in words is "seven million, two hundred twenty-seven thousand, nine hundred ninety".