902227478 has 4 divisors (see below), whose sum is σ = 1353341220. Its totient is φ = 451113738.

The previous prime is 902227477. The next prime is 902227481. The reversal of 902227478 is 874722209.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (902227477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225556868 + ... + 225556871.

It is an arithmetic number, because the mean of its divisors is an integer number (338335305).

Almost surely, 2^902227478 is an apocalyptic number.

902227478 is a deficient number, since it is larger than the sum of its proper divisors (451113742).

902227478 is a wasteful number, since it uses less digits than its factorization.

902227478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451113741.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 902227478 is about 30037.1016910753. The cubic root of 902227478 is about 966.2852492598.

The spelling of 902227478 in words is "nine hundred two million, two hundred twenty-seven thousand, four hundred seventy-eight".