15420030912 has 840 divisors, whose sum is σ = 56768894336. Its totient is φ = 4105728000.

The previous prime is 15420030839. The next prime is 15420030917. The reversal of 15420030912 is 21903002451.

15420030912 is a `hidden beast` number, since 1 + 542 + 0 + 0 + 30 + 91 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15420030917) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 252787362 + ... + 252787422.

Almost surely, 2^15420030912 is an apocalyptic number.

15420030912 is a gapful number since it is divisible by the number (12) 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 15420030912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28384447168).

15420030912 is an abundant number, since it is smaller than the sum of its proper divisors (41348863424).

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

15420030912 is a wasteful number, since it uses less digits than its factorization.

15420030912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 15420030912 in words is "fifteen billion, four hundred twenty million, thirty thousand, nine hundred twelve".