1400070 has 64 divisors (see below), whose sum is σ = 3939840. Its totient is φ = 311808.

The previous prime is 1400051. The next prime is 1400081. The reversal of 1400070 is 700041.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12334 + ... + 12446.

It is an arithmetic number, because the mean of its divisors is an integer number (61560).

2^1400070 is an apocalyptic number.

1400070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1969920).

1400070 is an abundant number, since it is smaller than the sum of its proper divisors (2539770).

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

1400070 is a wasteful number, since it uses less digits than its factorization.

1400070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189.

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 1400070 is about 1183.2455366491. The cubic root of 1400070 is about 111.8707586586.

The spelling of 1400070 in words is "one million, four hundred thousand, seventy".