1400162640 has 40 divisors (see below), whose sum is σ = 4340504928. Its totient is φ = 373376640.

The previous prime is 1400162627. The next prime is 1400162677. The reversal of 1400162640 is 462610041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1400162640.

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, 2916766 + ... + 2917245.

Almost surely, 2^1400162640 is an apocalyptic number.

1400162640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400162640 is an abundant number, since it is smaller than the sum of its proper divisors (2940342288).

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

1400162640 is a wasteful number, since it uses less digits than its factorization.

1400162640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5834027 (or 5834021 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1400162640 is about 37418.7471730415. The cubic root of 1400162640 is about 1118.7322603015.

Adding to 1400162640 its reverse (462610041), we get a palindrome (1862772681).

The spelling of 1400162640 in words is "one billion, four hundred million, one hundred sixty-two thousand, six hundred forty".