7121488 has 40 divisors (see below), whose sum is σ = 15418656. Its totient is φ = 3158400.

The previous prime is 7121473. The next prime is 7121489. The reversal of 7121488 is 8841217.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7121489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7098 + ... + 8038.

Almost surely, 2^7121488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7121488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7709328).

7121488 is an abundant number, since it is smaller than the sum of its proper divisors (8297168).

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

7121488 is a wasteful number, since it uses less digits than its factorization.

7121488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 997 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 7121488 is about 2668.6116240472. The cubic root of 7121488 is about 192.3934351432.

The spelling of 7121488 in words is "seven million, one hundred twenty-one thousand, four hundred eighty-eight".