30901628 has 6 divisors (see below), whose sum is σ = 54077856. Its totient is φ = 15450812.

The previous prime is 30901621. The next prime is 30901639. The reversal of 30901628 is 82610903.

It is a super-2 number, since 2×30901628² = 1909821226100768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30901628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30901621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3862700 + ... + 3862707.

It is an arithmetic number, because the mean of its divisors is an integer number (9012976).

Almost surely, 2^30901628 is an apocalyptic number.

It is an amenable number.

30901628 is a deficient number, since it is larger than the sum of its proper divisors (23176228).

30901628 is a wasteful number, since it uses less digits than its factorization.

30901628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7725411 (or 7725409 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 30901628 is about 5558.9232770385. The cubic root of 30901628 is about 313.8054293798.

The spelling of 30901628 in words is "thirty million, nine hundred one thousand, six hundred twenty-eight".