30903048078 has 64 divisors (see below), whose sum is σ = 74244971520. Its totient is φ = 8383871232.

The previous prime is 30903048061. The next prime is 30903048109. The reversal of 30903048078 is 87084030903.

It is a super-2 number, since 2×30903048078² (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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15588 + ... + 249096.

It is an arithmetic number, because the mean of its divisors is an integer number (1160077680).

Almost surely, 2^30903048078 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30903048078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37122485760).

30903048078 is an abundant number, since it is smaller than the sum of its proper divisors (43341923442).

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

30903048078 is a wasteful number, since it uses less digits than its factorization.

30903048078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233681.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 30903048078 in words is "thirty billion, nine hundred three million, forty-eight thousand, seventy-eight".