1438074072 has 24 divisors (see below), whose sum is σ = 3894784140. Its totient is φ = 479358000.

The previous prime is 1438074059. The next prime is 1438074101. The reversal of 1438074072 is 2704708341.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1438074072² = 4136114073117322368, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9986554 + ... + 9986697.

Almost surely, 2^1438074072 is an apocalyptic number.

1438074072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1438074072 is an abundant number, since it is smaller than the sum of its proper divisors (2456710068).

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

1438074072 is a wasteful number, since it uses less digits than its factorization.

1438074072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19973263 (or 19973256 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 1438074072 is about 37921.9471019092. The cubic root of 1438074072 is about 1128.7395745957.

The spelling of 1438074072 in words is "one billion, four hundred thirty-eight million, seventy-four thousand, seventy-two".