1400071392 has 120 divisors (see below), whose sum is σ = 4334437800. Its totient is φ = 442112256.

The previous prime is 1400071369. The next prime is 1400071399. The reversal of 1400071392 is 2931700041.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400071399) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35034 + ... + 63462.

It is an arithmetic number, because the mean of its divisors is an integer number (36120315).

Almost surely, 2^1400071392 is an apocalyptic number.

1400071392 is a gapful number since it is divisible by the number (12) 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 1400071392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2167218900).

1400071392 is an abundant number, since it is smaller than the sum of its proper divisors (2934366408).

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

1400071392 is a wasteful number, since it uses less digits than its factorization.

1400071392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28470 (or 28453 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1400071392 is about 37417.5278713065. The cubic root of 1400071392 is about 1118.7079573394.

The spelling of 1400071392 in words is "one billion, four hundred million, seventy-one thousand, three hundred ninety-two".