1401628 has 24 divisors (see below), whose sum is σ = 2605680. Its totient is φ = 658560.

The previous prime is 1401623. The next prime is 1401629. The reversal of 1401628 is 8261041.

It is a super-2 number, since 2×1401628² = 3929122100768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1401599 and 1401608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401623) 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, 4848 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (108570).

2^1401628 is an apocalyptic number.

It is an amenable number.

1401628 is a deficient number, since it is larger than the sum of its proper divisors (1204052).

1401628 is a wasteful number, since it uses less digits than its factorization.

1401628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 355 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1401628 is about 1183.9037123010. The cubic root of 1401628 is about 111.9122399251.

Adding to 1401628 its reverse (8261041), we get a palindrome (9662669).

The spelling of 1401628 in words is "one million, four hundred one thousand, six hundred twenty-eight".