1400436 has 24 divisors (see below), whose sum is σ = 3631040. Its totient is φ = 466776.

The previous prime is 1400423. The next prime is 1400449. The reversal of 1400436 is 6340041.

It is an interprime number because it is at equal distance from previous prime (1400423) and next prime (1400449).

It is a super-2 number, since 2×1400436² = 3922441980192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6376 + ... + 6591.

2^1400436 is an apocalyptic number.

It is an amenable number.

1400436 is an abundant number, since it is smaller than the sum of its proper divisors (2230604).

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

1400436 is a wasteful number, since it uses less digits than its factorization.

1400436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12980 (or 12972 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1400436 is about 1183.4001859050. The cubic root of 1400436 is about 111.8805060594.

Adding to 1400436 its reverse (6340041), we get a palindrome (7740477).

The spelling of 1400436 in words is "one million, four hundred thousand, four hundred thirty-six".