361201620 has 96 divisors (see below), whose sum is σ = 1093397760. Its totient is φ = 88565760.

The previous prime is 361201619. The next prime is 361201639. The reversal of 361201620 is 26102163.

It is a happy number.

It is a super-2 number, since 2×361201620² = 260933220581248800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241836 + ... + 243324.

It is an arithmetic number, because the mean of its divisors is an integer number (11389560).

Almost surely, 2^361201620 is an apocalyptic number.

361201620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 361201620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (546698880).

361201620 is an abundant number, since it is smaller than the sum of its proper divisors (732196140).

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

361201620 is a wasteful number, since it uses less digits than its factorization.

361201620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 361201620 is about 19005.3050488541. The cubic root of 361201620 is about 712.1692697116.

Adding to 361201620 its reverse (26102163), we get a palindrome (387303783).

The spelling of 361201620 in words is "three hundred sixty-one million, two hundred one thousand, six hundred twenty".