7387388428 has 24 divisors (see below), whose sum is σ = 15284253600. Its totient is φ = 3056850048.

The previous prime is 7387388413. The next prime is 7387388429. The reversal of 7387388428 is 8248837837.

It is a happy number.

It is a super-2 number, since 2×7387388428² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (7387388429) 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, 4548073 + ... + 4549696.

It is an arithmetic number, because the mean of its divisors is an integer number (636843900).

Almost surely, 2^7387388428 is an apocalyptic number.

It is an amenable number.

7387388428 is an abundant number, since it is smaller than the sum of its proper divisors (7896865172).

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

7387388428 is a wasteful number, since it uses less digits than its factorization.

7387388428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9097809 (or 9097807 counting only the distinct ones).

The product of its digits is 14450688, while the sum is 58.

The square root of 7387388428 is about 85949.9181384136. The cubic root of 7387388428 is about 1947.5874989346.

The spelling of 7387388428 in words is "seven billion, three hundred eighty-seven million, three hundred eighty-eight thousand, four hundred twenty-eight".