30953040 has 40 divisors (see below), whose sum is σ = 95955168. Its totient is φ = 8254080.

The previous prime is 30953029. The next prime is 30953051. The reversal of 30953040 is 4035903.

It is an interprime number because it is at equal distance from previous prime (30953029) and next prime (30953051).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30953040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64246 + ... + 64725.

Almost surely, 2^30953040 is an apocalyptic number.

30953040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30953040 is an abundant number, since it is smaller than the sum of its proper divisors (65002128).

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

30953040 is a wasteful number, since it uses less digits than its factorization.

30953040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128987 (or 128981 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 30953040 is about 5563.5456320588. The cubic root of 30953040 is about 313.9793622419.

Adding to 30953040 its reverse (4035903), we get a palindrome (34988943).

The spelling of 30953040 in words is "thirty million, nine hundred fifty-three thousand, forty".