401575212 has 48 divisors (see below), whose sum is σ = 1047187680. Its totient is φ = 133078464.

The previous prime is 401575211. The next prime is 401575217. The reversal of 401575212 is 212575104.

It is a super-2 number, since 2×401575212² = 322525301785689888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (401575211) 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, 7938 + ... + 29430.

It is an arithmetic number, because the mean of its divisors is an integer number (21816410).

Almost surely, 2^401575212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401575212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523593840).

401575212 is an abundant number, since it is smaller than the sum of its proper divisors (645612468).

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

401575212 is a wasteful number, since it uses less digits than its factorization.

401575212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21679 (or 21671 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 401575212 is about 20039.3416059510. The cubic root of 401575212 is about 737.7722213303.

It can be divided in two parts, 40157 and 5212, that added together give a square (45369 = 213²).

The spelling of 401575212 in words is "four hundred one million, five hundred seventy-five thousand, two hundred twelve".