1401206436 has 72 divisors (see below), whose sum is σ = 4286056320. Its totient is φ = 376793856.

The previous prime is 1401206377. The next prime is 1401206449. The reversal of 1401206436 is 6346021041.

1401206436 is a `hidden beast` number, since 1 + 4 + 0 + 12 + 0 + 643 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159256 + ... + 167823.

It is an arithmetic number, because the mean of its divisors is an integer number (59528560).

Almost surely, 2^1401206436 is an apocalyptic number.

It is an amenable number.

1401206436 is an abundant number, since it is smaller than the sum of its proper divisors (2884849884).

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

1401206436 is a wasteful number, since it uses less digits than its factorization.

1401206436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327113 (or 327108 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1401206436 is about 37432.6920752435. The cubic root of 1401206436 is about 1119.0101894915.

Adding to 1401206436 its reverse (6346021041), we get a palindrome (7747227477).

The spelling of 1401206436 in words is "one billion, four hundred one million, two hundred six thousand, four hundred thirty-six".