7148720 has 40 divisors (see below), whose sum is σ = 16742976. Its totient is φ = 2838528.

The previous prime is 7148717. The next prime is 7148737. The reversal of 7148720 is 278417.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×7148720² = 102208395276800, which contains 22 as substring.

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, 15209 + ... + 15671.

Almost surely, 2^7148720 is an apocalyptic number.

7148720 is the 1544-th octagonal number.

It is an amenable number.

7148720 is an abundant number, since it is smaller than the sum of its proper divisors (9594256).

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

7148720 is a wasteful number, since it uses less digits than its factorization.

7148720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 7148720 is about 2673.7090342818. The cubic root of 7148720 is about 192.6383555873.

The spelling of 7148720 in words is "seven million, one hundred forty-eight thousand, seven hundred twenty".