1401626940 has 96 divisors (see below), whose sum is σ = 4502615040. Its totient is φ = 319128576.

The previous prime is 1401626939. The next prime is 1401626953. The reversal of 1401626940 is 496261041.

1401626940 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104116 + ... + 116804.

It is an arithmetic number, because the mean of its divisors is an integer number (46902240).

Almost surely, 2^1401626940 is an apocalyptic number.

1401626940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401626940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2251307520).

1401626940 is an abundant number, since it is smaller than the sum of its proper divisors (3100988100).

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

1401626940 is a wasteful number, since it uses less digits than its factorization.

1401626940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12971 (or 12969 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1401626940 is about 37438.3084553776. The cubic root of 1401626940 is about 1119.1221171337.

Adding to 1401626940 its reverse (496261041), we get a palindrome (1897887981).

The spelling of 1401626940 in words is "one billion, four hundred one million, six hundred twenty-six thousand, nine hundred forty".