30556213400 has 72 divisors (see below), whose sum is σ = 72587963820. Its totient is φ = 11962259520.

The previous prime is 30556213333. The next prime is 30556213427. The reversal of 30556213400 is 431265503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 407219 + ... + 476381.

Almost surely, 2^30556213400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30556213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36293981910).

30556213400 is an abundant number, since it is smaller than the sum of its proper divisors (42031750420).

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

30556213400 is a wasteful number, since it uses less digits than its factorization.

30556213400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69273 (or 69217 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 30556213400 its reverse (431265503), we get a palindrome (30987478903).

The spelling of 30556213400 in words is "thirty billion, five hundred fifty-six million, two hundred thirteen thousand, four hundred".