30415491840 has 432 divisors, whose sum is σ = 105469566048. Its totient is φ = 7463632896.

The previous prime is 30415491797. The next prime is 30415491851. The reversal of 30415491840 is 4819451403.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51290584 + ... + 51291176.

It is an arithmetic number, because the mean of its divisors is an integer number (244142514).

Almost surely, 2^30415491840 is an apocalyptic number.

30415491840 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 30415491840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52734783024).

30415491840 is an abundant number, since it is smaller than the sum of its proper divisors (75054074208).

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

30415491840 is a wasteful number, since it uses less digits than its factorization.

30415491840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 30415491840 in words is "thirty billion, four hundred fifteen million, four hundred ninety-one thousand, eight hundred forty".