30620070 has 48 divisors (see below), whose sum is σ = 85739472. Its totient is φ = 7536960.

The previous prime is 30620063. The next prime is 30620089. The reversal of 30620070 is 7002603.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11916 + ... + 14255.

It is an arithmetic number, because the mean of its divisors is an integer number (1786239).

Almost surely, 2^30620070 is an apocalyptic number.

30620070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30620070 is an abundant number, since it is smaller than the sum of its proper divisors (55119402).

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

30620070 is a wasteful number, since it uses less digits than its factorization.

30620070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26197 (or 26194 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30620070 is about 5533.5404579708. The cubic root of 30620070 is about 312.8494480231.

Adding to 30620070 its reverse (7002603), we get a palindrome (37622673).

The spelling of 30620070 in words is "thirty million, six hundred twenty thousand, seventy".