3742278 has 32 divisors (see below), whose sum is σ = 8346240. Its totient is φ = 1111680.

The previous prime is 3742273. The next prime is 3742279. The reversal of 3742278 is 8722473.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3742273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (260820).

Almost surely, 2^3742278 is an apocalyptic number.

3742278 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3742278 is an abundant number, since it is smaller than the sum of its proper divisors (4603962).

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

3742278 is a wasteful number, since it uses less digits than its factorization.

3742278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972.

The product of its digits is 18816, while the sum is 33.

The square root of 3742278 is about 1934.4968338046. The cubic root of 3742278 is about 155.2549117964.

The spelling of 3742278 in words is "three million, seven hundred forty-two thousand, two hundred seventy-eight".