30280000278 has 32 divisors (see below), whose sum is σ = 66077182080. Its totient is φ = 9174128960.

The previous prime is 30280000271. The next prime is 30280000307. The reversal of 30280000278 is 87200008203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30280000271) 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, 364201 + ... + 439547.

It is an arithmetic number, because the mean of its divisors is an integer number (2064911940).

Almost surely, 2^30280000278 is an apocalyptic number.

30280000278 is an abundant number, since it is smaller than the sum of its proper divisors (35797181802).

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

30280000278 is a wasteful number, since it uses less digits than its factorization.

30280000278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81452.

The product of its (nonzero) digits is 5376, while the sum is 30.

The spelling of 30280000278 in words is "thirty billion, two hundred eighty million, two hundred seventy-eight", and thus it is an aban number.