30206070 has 48 divisors (see below), whose sum is σ = 79337232. Its totient is φ = 7972800.

The previous prime is 30206063. The next prime is 30206083. The reversal of 30206070 is 7060203.

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

It is a Curzon number.

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, 7429 + ... + 10751.

It is an arithmetic number, because the mean of its divisors is an integer number (1652859).

Almost surely, 2^30206070 is an apocalyptic number.

30206070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30206070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39668616).

30206070 is an abundant number, since it is smaller than the sum of its proper divisors (49131162).

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

30206070 is a wasteful number, since it uses less digits than its factorization.

30206070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437 (or 3434 counting only the distinct ones).

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

The square root of 30206070 is about 5496.0049126616. The cubic root of 30206070 is about 311.4330804635.

Adding to 30206070 its reverse (7060203), we get a palindrome (37266273).

The spelling of 30206070 in words is "thirty million, two hundred six thousand, seventy".