2147400 has 72 divisors (see below), whose sum is σ = 7217730. Its totient is φ = 572160.

The previous prime is 2147381. The next prime is 2147407. The reversal of 2147400 is 47412.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1602756 + 544644 = 1266^2 + 738^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×2147400² = 9222653520000, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (2147407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1204 + ... + 2396.

2^2147400 is an apocalyptic number.

2147400 is a gapful number since it is divisible by the number (20) 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 2147400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3608865).

2147400 is an abundant number, since it is smaller than the sum of its proper divisors (5070330).

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

2147400 is a wasteful number, since it uses less digits than its factorization.

2147400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215 (or 1203 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 2147400 is about 1465.4009690184. The cubic root of 2147400 is about 129.0142403605.

The spelling of 2147400 in words is "two million, one hundred forty-seven thousand, four hundred".