7681403028 has 48 divisors (see below), whose sum is σ = 19342471680. Its totient is φ = 2358551424.

The previous prime is 7681402999. The next prime is 7681403033. The reversal of 7681403028 is 8203041867.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23326 + ... + 126122.

It is an arithmetic number, because the mean of its divisors is an integer number (402968160).

Almost surely, 2^7681403028 is an apocalyptic number.

7681403028 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7681403028 is an abundant number, since it is smaller than the sum of its proper divisors (11661068652).

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

7681403028 is a wasteful number, since it uses less digits than its factorization.

7681403028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103296 (or 103294 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 7681403028 is about 87643.6137319771. The cubic root of 7681403028 is about 1973.0897967528.

The spelling of 7681403028 in words is "seven billion, six hundred eighty-one million, four hundred three thousand, twenty-eight".