49278406 has 16 divisors (see below), whose sum is σ = 76480128. Its totient is φ = 23788800.

The previous prime is 49278403. The next prime is 49278409. The reversal of 49278406 is 60487294.

It is an interprime number because it is at equal distance from previous prime (49278403) and next prime (49278409).

It is a super-2 number, since 2×49278406² = 4856722595801672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49278403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41136 + ... + 42316.

It is an arithmetic number, because the mean of its divisors is an integer number (4780008).

Almost surely, 2^49278406 is an apocalyptic number.

49278406 is a deficient number, since it is larger than the sum of its proper divisors (27201722).

49278406 is a wasteful number, since it uses less digits than its factorization.

49278406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 49278406 is about 7019.8579757713. The cubic root of 49278406 is about 366.6223051933.

The spelling of 49278406 in words is "forty-nine million, two hundred seventy-eight thousand, four hundred six".