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2220402 = 23370067
BaseRepresentation
bin1000011110000101110010
311011210211010
420132011302
51032023102
6115331350
724605322
oct10360562
94153733
102220402
111287248
128b0b56
135c9862
1441b282
152dcd6c
hex21e172

2220402 has 8 divisors (see below), whose sum is σ = 4440816. Its totient is φ = 740132.

The previous prime is 2220389. The next prime is 2220403. The reversal of 2220402 is 2040222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

2220402 is an admirable number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2220403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185028 + ... + 185039.

It is an arithmetic number, because the mean of its divisors is an integer number (555102).

22220402 is an apocalyptic number.

2220402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2220402 is a wasteful number, since it uses less digits than its factorization.

2220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370072.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2220402 is about 1490.1013388357. The cubic root of 2220402 is about 130.4599486611.

Adding to 2220402 its reverse (2040222), we get a palindrome (4260624).

It can be divided in two parts, 22 and 20402, that multiplied together give a palindrome (448844).

The spelling of 2220402 in words is "two million, two hundred twenty thousand, four hundred two".

Divisors: 1 2 3 6 370067 740134 1110201 2220402