30640204380 has 24 divisors (see below), whose sum is σ = 85792572432. Its totient is φ = 8170721152.

The previous prime is 30640204373. The next prime is 30640204409. The reversal of 30640204380 is 8340204603.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255334977 + ... + 255335096.

It is an arithmetic number, because the mean of its divisors is an integer number (3574690518).

Almost surely, 2^30640204380 is an apocalyptic number.

30640204380 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30640204380 is an abundant number, since it is smaller than the sum of its proper divisors (55152368052).

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

30640204380 is a wasteful number, since it uses less digits than its factorization.

30640204380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510670085 (or 510670083 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 30640204380 its reverse (8340204603), we get a palindrome (38980408983).

The spelling of 30640204380 in words is "thirty billion, six hundred forty million, two hundred four thousand, three hundred eighty".