201530070 has 192 divisors, whose sum is σ = 655589376. Its totient is φ = 41886720.

The previous prime is 201530033. The next prime is 201530107. The reversal of 201530070 is 70035102.

It is an interprime number because it is at equal distance from previous prime (201530033) and next prime (201530107).

It is a super-2 number, since 2×201530070² = 81228738228409800, which contains 22 as substring.

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 95 ways as a sum of consecutive naturals, for example, 331707 + ... + 332313.

It is an arithmetic number, because the mean of its divisors is an integer number (3414528).

Almost surely, 2^201530070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201530070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327794688).

201530070 is an abundant number, since it is smaller than the sum of its proper divisors (454059306).

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

201530070 is a wasteful number, since it uses less digits than its factorization.

201530070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 18.

The square root of 201530070 is about 14196.1286976415. The cubic root of 201530070 is about 586.2910779648.

Adding to 201530070 its reverse (70035102), we get a palindrome (271565172).

The spelling of 201530070 in words is "two hundred one million, five hundred thirty thousand, seventy".