400232982 has 32 divisors (see below), whose sum is σ = 836474112. Its totient is φ = 127426464.

The previous prime is 400232981. The next prime is 400232983. The reversal of 400232982 is 289232004.

It is an interprime number because it is at equal distance from previous prime (400232981) and next prime (400232983).

It is a super-2 number, since 2×400232982² = 320372879761224648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400232981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119373 + ... + 122679.

It is an arithmetic number, because the mean of its divisors is an integer number (26139816).

Almost surely, 2^400232982 is an apocalyptic number.

400232982 is an abundant number, since it is smaller than the sum of its proper divisors (436241130).

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

400232982 is a wasteful number, since it uses less digits than its factorization.

400232982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 400232982 is about 20005.8237021123. The cubic root of 400232982 is about 736.9493241343.

Adding to 400232982 its reverse (289232004), we get a palindrome (689464986).

The spelling of 400232982 in words is "four hundred million, two hundred thirty-two thousand, nine hundred eighty-two".