30502778036 has 12 divisors (see below), whose sum is σ = 54681809700. Its totient is φ = 14879403840.

The previous prime is 30502778029. The next prime is 30502778039. The reversal of 30502778036 is 63087720503.

It can be written as a sum of positive squares in 2 ways, for example, as 9537475600 + 20965302436 = 97660^2 + 144794^2 .

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 30502777984 and 30502778002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30502778039) 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, 92996111 + ... + 92996438.

It is an arithmetic number, because the mean of its divisors is an integer number (4556817475).

Almost surely, 2^30502778036 is an apocalyptic number.

It is an amenable number.

30502778036 is a deficient number, since it is larger than the sum of its proper divisors (24179031664).

30502778036 is a wasteful number, since it uses less digits than its factorization.

30502778036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185992594 (or 185992592 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 30502778036 in words is "thirty billion, five hundred two million, seven hundred seventy-eight thousand, thirty-six".