7280073940 has 48 divisors (see below), whose sum is σ = 15670255104. Its totient is φ = 2840112000.

The previous prime is 7280073937. The next prime is 7280073947. The reversal of 7280073940 is 493700827.

It is a junction number, because it is equal to n+sod(n) for n = 7280073893 and 7280073902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7280073947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108445 + ... + 162235.

It is an arithmetic number, because the mean of its divisors is an integer number (326463648).

Almost surely, 2^7280073940 is an apocalyptic number.

It is an amenable number.

7280073940 is an abundant number, since it is smaller than the sum of its proper divisors (8390181164).

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

7280073940 is a wasteful number, since it uses less digits than its factorization.

7280073940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53968 (or 53966 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 7280073940 is about 85323.3493247892. The cubic root of 7280073940 is about 1938.1107781767.

The spelling of 7280073940 in words is "seven billion, two hundred eighty million, seventy-three thousand, nine hundred forty".