30953428 has 24 divisors (see below), whose sum is σ = 59409504. Its totient is φ = 13994400.

The previous prime is 30953393. The next prime is 30953443. The reversal of 30953428 is 82435903.

It is a happy number.

It is a super-2 number, since 2×30953428² = 1916229409902368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30953393 and 30953402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6883 + ... + 10453.

It is an arithmetic number, because the mean of its divisors is an integer number (2475396).

Almost surely, 2^30953428 is an apocalyptic number.

It is an amenable number.

30953428 is a deficient number, since it is larger than the sum of its proper divisors (28456076).

30953428 is a wasteful number, since it uses less digits than its factorization.

30953428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3781 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 30953428 is about 5563.5805017992. The cubic root of 30953428 is about 313.9806741591.

The spelling of 30953428 in words is "thirty million, nine hundred fifty-three thousand, four hundred twenty-eight".