30984954 has 144 divisors (see below), whose sum is σ = 86605344. Its totient is φ = 7318080.

The previous prime is 30984929. The next prime is 30984959. The reversal of 30984954 is 45948903.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30984959) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 462429 + ... + 462495.

It is an arithmetic number, because the mean of its divisors is an integer number (601426).

Almost surely, 2^30984954 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30984954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43302672).

30984954 is an abundant number, since it is smaller than the sum of its proper divisors (55620390).

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

30984954 is a wasteful number, since it uses less digits than its factorization.

30984954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 30984954 is about 5566.4130281538. The cubic root of 30984954 is about 314.0872342046.

30984954 divided by its sum of digits (42) gives a palindrome (737737).

It can be divided in two parts, 309849 and 54, that added together give a palindrome (309903).

The spelling of 30984954 in words is "thirty million, nine hundred eighty-four thousand, nine hundred fifty-four".