400230100 has 18 divisors (see below), whose sum is σ = 868499534. Its totient is φ = 160092000.

The previous prime is 400230097. The next prime is 400230109. The reversal of 400230100 is 1032004.

It can be written as a sum of positive squares in 3 ways, for example, as 85451536 + 314778564 = 9244^2 + 17742^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400230109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001051 + ... + 2001250.

Almost surely, 2^400230100 is an apocalyptic number.

It is an amenable number.

400230100 is an abundant number, since it is smaller than the sum of its proper divisors (468269434).

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

400230100 is a wasteful number, since it uses less digits than its factorization.

400230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002315 (or 4002308 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 400230100 is about 20005.7516729565. The cubic root of 400230100 is about 736.9475552538.

Adding to 400230100 its reverse (1032004), we get a palindrome (401262104).

The spelling of 400230100 in words is "four hundred million, two hundred thirty thousand, one hundred".