30070428 has 24 divisors (see below), whose sum is σ = 70333200. Its totient is φ = 9999360.

The previous prime is 30070421. The next prime is 30070429. The reversal of 30070428 is 82407003.

It is a junction number, because it is equal to n+sod(n) for n = 30070398 and 30070407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30070421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2598 + ... + 8178.

It is an arithmetic number, because the mean of its divisors is an integer number (2930550).

Almost surely, 2^30070428 is an apocalyptic number.

It is an amenable number.

30070428 is an abundant number, since it is smaller than the sum of its proper divisors (40262772).

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

30070428 is a wasteful number, since it uses less digits than its factorization.

30070428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037 (or 6035 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 30070428 is about 5483.6509735759. The cubic root of 30070428 is about 310.9662118702.

The spelling of 30070428 in words is "thirty million, seventy thousand, four hundred twenty-eight".