401772 has 24 divisors (see below), whose sum is σ = 1071616. Its totient is φ = 114768.

The previous prime is 401771. The next prime is 401773. The reversal of 401772 is 277104.

It is an interprime number because it is at equal distance from previous prime (401771) and next prime (401773).

It is a super-2 number, since 2×401772² = 322841479968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (401771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2308 + ... + 2475.

2⁴⁰¹⁷⁷² is an apocalyptic number.

401772 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

401772 is an abundant number, since it is smaller than the sum of its proper divisors (669844).

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

401772 is a wasteful number, since it uses less digits than its factorization.

401772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 401772 is about 633.8548729796. The cubic root of 401772 is about 73.7892714334.

Adding to 401772 its reverse (277104), we get a palindrome (678876).

The spelling of 401772 in words is "four hundred one thousand, seven hundred seventy-two", and thus it is an iban number.