2070401780 has 36 divisors (see below), whose sum is σ = 4618656588. Its totient is φ = 779443200.

The previous prime is 2070401779. The next prime is 2070401807. The reversal of 2070401780 is 871040702.

It can be written as a sum of positive squares in 6 ways, for example, as 110923024 + 1959478756 = 10532^2 + 44266^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173321 + ... + 184880.

Almost surely, 2^2070401780 is an apocalyptic number.

2070401780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2070401780 is an abundant number, since it is smaller than the sum of its proper divisors (2548254808).

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

2070401780 is a wasteful number, since it uses less digits than its factorization.

2070401780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358244 (or 358225 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 2070401780 is about 45501.6678815184. The cubic root of 2070401780 is about 1274.5343484754.

The spelling of 2070401780 in words is "two billion, seventy million, four hundred one thousand, seven hundred eighty".