1377678240 has 96 divisors (see below), whose sum is σ = 4821888960. Its totient is φ = 367379712.

The previous prime is 1377678221. The next prime is 1377678257. The reversal of 1377678240 is 428767731.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155134 + ... + 163773.

It is an arithmetic number, because the mean of its divisors is an integer number (50228010).

Almost surely, 2^1377678240 is an apocalyptic number.

1377678240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1377678240 is an abundant number, since it is smaller than the sum of its proper divisors (3444210720).

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

1377678240 is a wasteful number, since it uses less digits than its factorization.

1377678240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318931 (or 318917 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 45.

The square root of 1377678240 is about 37117.0882478677. The cubic root of 1377678240 is about 1112.7115591434.

The spelling of 1377678240 in words is "one billion, three hundred seventy-seven million, six hundred seventy-eight thousand, two hundred forty".