30421776840 has 256 divisors, whose sum is σ = 115951288320. Its totient is φ = 6211537920.

The previous prime is 30421776829. The next prime is 30421776841. The reversal of 30421776840 is 4867712403.

It is a super-2 number, since 2×30421776840² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 30421776792 and 30421776801.

It is not an unprimeable number, because it can be changed into a prime (30421776841) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293587 + ... + 383453.

It is an arithmetic number, because the mean of its divisors is an integer number (452934720).

Almost surely, 2^30421776840 is an apocalyptic number.

30421776840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30421776840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57975644160).

30421776840 is an abundant number, since it is smaller than the sum of its proper divisors (85529511480).

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

30421776840 is a wasteful number, since it uses less digits than its factorization.

30421776840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89932 (or 89928 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 30421776840 in words is "thirty billion, four hundred twenty-one million, seven hundred seventy-six thousand, eight hundred forty".