30213090978 has 64 divisors (see below), whose sum is σ = 73025003520. Its totient is φ = 8150083200.

The previous prime is 30213090961. The next prime is 30213090979. The reversal of 30213090978 is 87909031203.

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

It is not an unprimeable number, because it can be changed into a prime (30213090979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229608 + ... + 336371.

It is an arithmetic number, because the mean of its divisors is an integer number (1141015680).

Almost surely, 2^30213090978 is an apocalyptic number.

30213090978 is an abundant number, since it is smaller than the sum of its proper divisors (42811912542).

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

30213090978 is a wasteful number, since it uses less digits than its factorization.

30213090978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566063.

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 30213090978 in words is "thirty billion, two hundred thirteen million, ninety thousand, nine hundred seventy-eight".