30301992 has 128 divisors (see below), whose sum is σ = 98400000. Its totient is φ = 8636544.

The previous prime is 30301969. The next prime is 30302009. The reversal of 30301992 is 29910303.

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

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, 73884 + ... + 74292.

It is an arithmetic number, because the mean of its divisors is an integer number (768750).

Almost surely, 2^30301992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30301992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49200000).

30301992 is an abundant number, since it is smaller than the sum of its proper divisors (68098008).

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

30301992 is a wasteful number, since it uses less digits than its factorization.

30301992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 30301992 is about 5504.7245162678. The cubic root of 30301992 is about 311.7623930583.

The spelling of 30301992 in words is "thirty million, three hundred one thousand, nine hundred ninety-two".