40078402 has 48 divisors (see below), whose sum is σ = 76418496. Its totient is φ = 15350400.

The previous prime is 40078369. The next prime is 40078411. The reversal of 40078402 is 20487004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 305877 + ... + 306007.

It is an arithmetic number, because the mean of its divisors is an integer number (1592052).

Almost surely, 2^40078402 is an apocalyptic number.

40078402 is a deficient number, since it is larger than the sum of its proper divisors (36340094).

40078402 is a wasteful number, since it uses less digits than its factorization.

40078402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 40078402 is about 6330.7505084311. The cubic root of 40078402 is about 342.2184860649.

The spelling of 40078402 in words is "forty million, seventy-eight thousand, four hundred two".