7148728401 has 4 divisors (see below), whose sum is σ = 9531637872. Its totient is φ = 4765818932.

The previous prime is 7148728393. The next prime is 7148728421. The reversal of 7148728401 is 1048278417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7148728401 - 2³ = 7148728393 is a prime.

It is a super-2 number, since 2×7148728401² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7148728421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1191454731 + ... + 1191454736.

It is an arithmetic number, because the mean of its divisors is an integer number (2382909468).

Almost surely, 2^7148728401 is an apocalyptic number.

It is an amenable number.

7148728401 is a deficient number, since it is larger than the sum of its proper divisors (2382909471).

7148728401 is a wasteful number, since it uses less digits than its factorization.

7148728401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382909470.

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 7148728401 is about 84550.1531695833. The cubic root of 7148728401 is about 1926.3843104852.

The spelling of 7148728401 in words is "seven billion, one hundred forty-eight million, seven hundred twenty-eight thousand, four hundred one".