3782178428 has 48 divisors (see below), whose sum is σ = 8017761024. Its totient is φ = 1523976960.

The previous prime is 3782178403. The next prime is 3782178431. The reversal of 3782178428 is 8248712873.

It is a super-2 number, since 2×3782178428² = 28609747322457102368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 515675 + ... + 522957.

It is an arithmetic number, because the mean of its divisors is an integer number (167036688).

Almost surely, 2^3782178428 is an apocalyptic number.

It is an amenable number.

3782178428 is an abundant number, since it is smaller than the sum of its proper divisors (4235582596).

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

3782178428 is a wasteful number, since it uses less digits than its factorization.

3782178428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402 (or 8400 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 50.

The square root of 3782178428 is about 61499.4181110683. The cubic root of 3782178428 is about 1558.0474184466.

The spelling of 3782178428 in words is "three billion, seven hundred eighty-two million, one hundred seventy-eight thousand, four hundred twenty-eight".