400132026 has 96 divisors (see below), whose sum is σ = 1054010880. Its totient is φ = 107094528.

The previous prime is 400132021. The next prime is 400132027. The reversal of 400132026 is 620231004.

It is a happy number.

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 (400132021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 785860 + ... + 786368.

It is an arithmetic number, because the mean of its divisors is an integer number (10979280).

Almost surely, 2^400132026 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400132026, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527005440).

400132026 is an abundant number, since it is smaller than the sum of its proper divisors (653878854).

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

400132026 is a wasteful number, since it uses less digits than its factorization.

400132026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 400132026 is about 20003.3003776877. The cubic root of 400132026 is about 736.8873554680.

The spelling of 400132026 in words is "four hundred million, one hundred thirty-two thousand, twenty-six".