1406511040 has 56 divisors (see below), whose sum is σ = 3653741232. Its totient is φ = 511457280.

The previous prime is 1406511017. The next prime is 1406511061. The reversal of 1406511040 is 401156041.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 196269 + ... + 203308.

Almost surely, 2^1406511040 is an apocalyptic number.

1406511040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1406511040 is an abundant number, since it is smaller than the sum of its proper divisors (2247230192).

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

1406511040 is a wasteful number, since it uses less digits than its factorization.

1406511040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399605 (or 399595 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1406511040 is about 37503.4803718268. The cubic root of 1406511040 is about 1120.4205053663.

Adding to 1406511040 its reverse (401156041), we get a palindrome (1807667081).

The spelling of 1406511040 in words is "one billion, four hundred six million, five hundred eleven thousand, forty".