400561150 has 24 divisors (see below), whose sum is σ = 812776104. Its totient is φ = 145658400.

The previous prime is 400561099. The next prime is 400561151. The reversal of 400561150 is 51165004.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400561151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363597 + ... + 364696.

It is an arithmetic number, because the mean of its divisors is an integer number (33865671).

Almost surely, 2^400561150 is an apocalyptic number.

400561150 is an abundant number, since it is smaller than the sum of its proper divisors (412214954).

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

400561150 is a wasteful number, since it uses less digits than its factorization.

400561150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728316 (or 728311 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 400561150 is about 20014.0238333025. The cubic root of 400561150 is about 737.1506877797.

The spelling of 400561150 in words is "four hundred million, five hundred sixty-one thousand, one hundred fifty".