30400531040 has 96 divisors (see below), whose sum is σ = 78417351936. Its totient is φ = 11045301760.

The previous prime is 30400531009. The next prime is 30400531081. The reversal of 30400531040 is 4013500403.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2251349 + ... + 2264811.

It is an arithmetic number, because the mean of its divisors is an integer number (816847416).

Almost surely, 2^30400531040 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 30400531040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39208675968).

30400531040 is an abundant number, since it is smaller than the sum of its proper divisors (48016820896).

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

30400531040 is a wasteful number, since it uses less digits than its factorization.

30400531040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14772 (or 14764 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The spelling of 30400531040 in words is "thirty billion, four hundred million, five hundred thirty-one thousand, forty".