2077239780 has 144 divisors (see below), whose sum is σ = 7855795584. Its totient is φ = 431631360.

The previous prime is 2077239767. The next prime is 2077239781. The reversal of 2077239780 is 879327702.

2077239780 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2077239780² = 8629850207228896800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2077239781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61077 + ... + 88796.

It is an arithmetic number, because the mean of its divisors is an integer number (54554136).

Almost surely, 2^2077239780 is an apocalyptic number.

2077239780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2077239780 is an abundant number, since it is smaller than the sum of its proper divisors (5778555804).

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

2077239780 is a wasteful number, since it uses less digits than its factorization.

2077239780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149906 (or 149901 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 2077239780 is about 45576.7460444468. The cubic root of 2077239780 is about 1275.9359586639.

The spelling of 2077239780 in words is "two billion, seventy-seven million, two hundred thirty-nine thousand, seven hundred eighty".