1390560 has 48 divisors (see below), whose sum is σ = 4381776. Its totient is φ = 370688.

The previous prime is 1390547. The next prime is 1390573. The reversal of 1390560 is 650931.

It is an interprime number because it is at equal distance from previous prime (1390547) and next prime (1390573).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1390560² = 3867314227200, which contains 22 as substring.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1390560.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969 + ... + 1928.

It is an arithmetic number, because the mean of its divisors is an integer number (91287).

2^1390560 is an apocalyptic number.

1390560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1390560 is an abundant number, since it is smaller than the sum of its proper divisors (2991216).

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

1390560 is a wasteful number, since it uses less digits than its factorization.

1390560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915 (or 2907 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 1390560 is about 1179.2200812401. The cubic root of 1390560 is about 111.6168882858.

The spelling of 1390560 in words is "one million, three hundred ninety thousand, five hundred sixty".