30976740 has 36 divisors (see below), whose sum is σ = 93963324. Its totient is φ = 8260416.

The previous prime is 30976739. The next prime is 30976741. The reversal of 30976740 is 4767903.

It is an interprime number because it is at equal distance from previous prime (30976739) and next prime (30976741).

It can be written as a sum of positive squares in 2 ways, for example, as 16597476 + 14379264 = 4074^2 + 3792^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30976695 and 30976704.

It is not an unprimeable number, because it can be changed into a prime (30976741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 85867 + ... + 86226.

Almost surely, 2^30976740 is an apocalyptic number.

30976740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30976740 is an abundant number, since it is smaller than the sum of its proper divisors (62986584).

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

30976740 is a wasteful number, since it uses less digits than its factorization.

30976740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172108 (or 172103 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 30976740 is about 5565.6751612001. The cubic root of 30976740 is about 314.0594772858.

The spelling of 30976740 in words is "thirty million, nine hundred seventy-six thousand, seven hundred forty".