30020640510 has 128 divisors (see below), whose sum is σ = 87626188800. Its totient is φ = 6425616384.

The previous prime is 30020640449. The next prime is 30020640553. The reversal of 30020640510 is 1504602003.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 689302 + ... + 731558.

It is an arithmetic number, because the mean of its divisors is an integer number (684579600).

Almost surely, 2^30020640510 is an apocalyptic number.

30020640510 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30020640510, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43813094400).

30020640510 is an abundant number, since it is smaller than the sum of its proper divisors (57605548290).

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

30020640510 is a wasteful number, since it uses less digits than its factorization.

30020640510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42490.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 30020640510 in words is "thirty billion, twenty million, six hundred forty thousand, five hundred ten".