366555420 has 288 divisors, whose sum is σ = 1415232000. Its totient is φ = 74580480.

The previous prime is 366555407. The next prime is 366555421. The reversal of 366555420 is 24555663.

It is a happy number.

366555420 is a `hidden beast` number, since 3 + 66 + 55 + 542 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (366555421) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 734331 + ... + 734829.

It is an arithmetic number, because the mean of its divisors is an integer number (4914000).

Almost surely, 2^366555420 is an apocalyptic number.

366555420 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 366555420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (707616000).

366555420 is an abundant number, since it is smaller than the sum of its proper divisors (1048676580).

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

366555420 is a wasteful number, since it uses less digits than its factorization.

366555420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585 (or 580 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 366555420 is about 19145.6371009168. The cubic root of 366555420 is about 715.6706635367.

The spelling of 366555420 in words is "three hundred sixty-six million, five hundred fifty-five thousand, four hundred twenty".