7148397440 has 32 divisors (see below), whose sum is σ = 17089139160. Its totient is φ = 2859358720.

The previous prime is 7148397413. The next prime is 7148397463. The reversal of 7148397440 is 447938417.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5584046 + ... + 5585325.

Almost surely, 2^7148397440 is an apocalyptic number.

It is an amenable number.

7148397440 is an abundant number, since it is smaller than the sum of its proper divisors (9940741720).

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

7148397440 is a wasteful number, since it uses less digits than its factorization.

7148397440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169390 (or 11169378 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 7148397440 is about 84548.1959594644. The cubic root of 7148397440 is about 1926.3545817520.

The spelling of 7148397440 in words is "seven billion, one hundred forty-eight million, three hundred ninety-seven thousand, four hundred forty".