30625020 has 48 divisors (see below), whose sum is σ = 95279520. Its totient is φ = 8166528.

The previous prime is 30625009. The next prime is 30625027. The reversal of 30625020 is 2052603.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30624984 and 30625002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30625027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27817 + ... + 28896.

It is an arithmetic number, because the mean of its divisors is an integer number (1984990).

Almost surely, 2^30625020 is an apocalyptic number.

30625020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30625020 is an abundant number, since it is smaller than the sum of its proper divisors (64654500).

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

30625020 is a wasteful number, since it uses less digits than its factorization.

30625020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56731 (or 56723 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30625020 is about 5533.9877123102. The cubic root of 30625020 is about 312.8663053907.

Adding to 30625020 its reverse (2052603), we get a palindrome (32677623).

The spelling of 30625020 in words is "thirty million, six hundred twenty-five thousand, twenty".