2738781400 has 24 divisors (see below), whose sum is σ = 6367667220. Its totient is φ = 1095512480.

The previous prime is 2738781377. The next prime is 2738781407. The reversal of 2738781400 is 41878372.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2738781407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6846754 + ... + 6847153.

Almost surely, 2^2738781400 is an apocalyptic number.

2738781400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2738781400 is an abundant number, since it is smaller than the sum of its proper divisors (3628885820).

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

2738781400 is a wasteful number, since it uses less digits than its factorization.

2738781400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13693923 (or 13693914 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 2738781400 is about 52333.3679405406. The cubic root of 2738781400 is about 1399.1119197648. Note that the first 3 decimals are identical.

The spelling of 2738781400 in words is "two billion, seven hundred thirty-eight million, seven hundred eighty-one thousand, four hundred".